Has anybody encountered this issue before? Here is a portion of the sql server errorlog:

12/23/2008 01:31:01,Logon,Unknown,SQL Server cannot accept new connections<c/> because it is shutting down. The connection has been closed. [CLIENT: 172.17.203.28]
12/23/2008 01:31:01,Logon,Unknown,Error: 17188<c/> Severity: 16<c/> State: 1.
12/23/2008 01:31:01,Logon,Unknown,SQL Server cannot accept new connections<c/> because it is shutting down. The connection has been closed. [CLIENT: 172.17.203.28]
12/23/2008 01:31:01,Logon,Unknown,Error: 17188<c/> Severity: 16<c/> State: 1.
12/23/2008 01:31:01,Logon,Unknown,SQL Server cannot accept new connections<c/> because it is shutting down. The connection has been closed. [CLIENT: 172.17.203.134]
12/23/2008 01:31:01,Logon,Unknown,Error: 17188<c/> Severity: 16<c/> State: 1.
12/23/2008 01:31:01,Logon,Unknown,SQL Server cannot accept new connections<c/> because it is shutting down. The connection has been closed. [CLIENT: 172.17.203.28]
12/23/2008 01:31:01,Logon,Unknown,Error: 17188<c/> Severity: 16<c/> State: 1.
12/23/2008 01:31:01,Logon,Unknown,SQL Server cannot accept new connections<c/> because it is shutting down. The connection has been closed. [CLIENT: 172.17.203.28]
12/23/2008 01:31:01,Logon,Unknown,Error: 17188<c/> Severity: 16<c/> State: 1.
12/23/2008 01:31:01,Logon,Unknown,SQL Server cannot accept new connections<c/> because it is shutting down. The connection has been closed. [CLIENT: 172.17.203.28]
12/23/2008 01:31:01,Logon,Unknown,Error: 17188<c/> Severity: 16<c/> State: 1.
12/23/2008 01:31:01,Logon,Unknown,Login failed for user 'SAPBWPDB'. Only administrators may connect at this time. [CLIENT: 172.17.203.28]
12/23/2008 01:31:01,Logon,Unknown,Error: 18451<c/> Severity: 14<c/> State: 1.
12/23/2008 01:31:01,Logon,Unknown,Login failed for user 'SAPBWPDB'. Only administrators may connect at this time. [CLIENT: 172.17.203.28]
12/23/2008 01:31:01,Logon,Unknown,Error: 18451<c/> Severity: 14<c/> State: 1.
12/23/2008 01:31:01,Logon,Unknown,Login failed for user 'SAPBWPDB'. Only administrators may connect at this time. [CLIENT: 172.17.203.28]
12/23/2008 01:31:01,Logon,Unknown,Error: 18451<c/> Severity: 14<c/> State: 1.
12/23/2008 01:31:01,Logon,Unknown,Login failed for user 'SAPBWPDB'. Only administrators may connect at this time. [CLIENT: 172.17.203.28]
12/23/2008 01:31:01,Logon,Unknown,Error: 18451<c/> Severity: 14<c/> State: 1.
12/23/2008 01:31:01,Logon,Unknown,Login failed for user 'SAPBWPDB'. Only administrators may connect at this time. [CLIENT: 172.17.203.28]
12/23/2008 01:31:01,Logon,Unknown,Error: 18451<c/> Severity: 14<c/> State: 1.
12/23/2008 01:31:01,spid5s,Unknown,SQL Trace was stopped due to server shutdown. Trace ID = '1'. This is an informational message only; no user action is required.
12/23/2008 01:31:01,Logon,Unknown,Login failed for user 'SAPBWPDB'. Only administrators may connect at this time. [CLIENT: 172.17.203.28]
12/23/2008 01:31:01,Logon,Unknown,Error: 18451<c/> Severity: 14<c/> State: 1.
12/23/2008 01:31:01,spid5s,Unknown,SQL Server is terminating in response to a 'stop' request from Service Control Manager. This is an informational message only. No user action is required.
12/23/2008 01:31:00,Logon,Unknown,Login failed for user 'SAPBWPDB'. Only administrators may connect at this time. [CLIENT: 172.17.203.28]
12/23/2008 01:31:00,Logon,Unknown,Error: 18451<c/> Severity: 14<c/> State: 1.
12/23/2008 01:31:00,Logon,Unknown,Login failed for user 'SAPBWPDB'. Only administrators may connect at this time. [CLIENT: 172.17.203.28]
12/23/2008 01:31:00,Logon,Unknown,Error: 18451<c/> Severity: 14<c/> State: 1.
12/23/2008 01:31:00,Logon,Unknown,Login failed for user 'SAPBWPDB'. Only administrators may connect at this time. [CLIENT: 172.17.203.28]
12/23/2008 01:31:00,Logon,Unknown,Error: 18451<c/> Severity: 14<c/> State: 1.
12/23/2008 01:31:00,Logon,Unknown,Login failed for user 'SAPBWPDB'. Only administrators may connect at this time. [CLIENT: 172.17.203.28]
12/23/2008 01:31:00,Logon,Unknown,Error: 18451<c/> Severity: 14<c/> State: 1.
12/23/2008 01:31:00,Logon,Unknown,Login failed for user 'SAPBWPDB'. Only administrators may connect at this time. [CLIENT: 172.17.203.28]
12/23/2008 01:31:00,Logon,Unknown,Error: 18451<c/> Severity: 14<c/> State: 1.
12/23/2008 01:31:00,spid12s,Unknown,Service Broker manager has shut down.
12/23/2008 01:30:58,Logon,Unknown,Login failed for user 'SAPBWPDB'. Only administrators may connect at this time. [CLIENT: 172.17.203.28]
12/23/2008 01:30:58,Logon,Unknown,Error: 18451<c/> Severity: 14<c/> State: 1.
12/23/2008 01:30:58,Logon,Unknown,Login failed for user 'SAPBWPDB'. Only administrators may connect at this time. [CLIENT: 172.17.203.28]
12/23/2008 01:30:58,Logon,Unknown,Error: 18451<c/> Severity: 14<c/> State: 1.
12/23/2008 01:30:58,Logon,Unknown,Login failed for user 'SAPBWPDB'. Only administrators may connect at this time. [CLIENT: 172.17.203.74]
12/23/2008 01:30:58,Logon,Unknown,Error: 18451<c/> Severity: 14<c/> State: 1.
12/23/2008 01:30:58,Logon,Unknown,Login failed for user 'SAPBWPDB'. Only administrators may connect at this time. [CLIENT: 172.17.203.74]
12/23/2008 01:30:58,Logon,Unknown,Error: 18451<c/> Severity: 14<c/> State: 1.
12/23/2008 01:30:58,Logon,Unknown,Login failed for user 'SAPBWPDB'. Only administrators may connect at this time. [CLIENT: 172.17.203.55]
12/23/2008 01:30:58,Logon,Unknown,Error: 18451<c/> Severity: 14<c/> State: 1.
12/23/2008 01:30:55,spid75,Unknown,Configuration option 'Agent XPs' changed from 1 to 0. Run the RECONFIGURE statement to install.
12/23/2008 01:30:52,spid82,Unknown,BackupVirtualDeviceFile::R equestDurableMedia: Flush failure on backup device 'SQLsafe.d00de40f-d807-4d7a-b824-b2d1f7781ff1'. Operating system error 995(The I/O operation has been aborted because of either a thread exit or an application request.).
12/23/2008 01:30:52,spid82,Unknown,Error: 18210<c/> Severity: 16<c/> State: 1.
12/23/2008 01:30:52,spid82,Unknown,BackupVirtualDeviceFile::R equestDurableMedia: Flush failure on backup device 'SQLsafe.d00de40f-d807-4d7a-b824-b2d1f7781ff1.2'. Operating system error 995(The I/O operation has been aborted because of either a thread exit or an application request.).
12/23/2008 01:30:52,spid82,Unknown,Error: 18210<c/> Severity: 16<c/> State: 1.
12/23/2008 01:30:52,spid82,Unknown,BackupVirtualDeviceFile::R equestDurableMedia: Flush failure on backup device 'SQLsafe.d00de40f-d807-4d7a-b824-b2d1f7781ff1.1'. Operating system error 995(The I/O operation has been aborted because of either a thread exit or an application request.).
12/23/2008 01:30:52,spid82,Unknown,Error: 18210<c/> Severity: 16<c/> State: 1.
12/23/2008 01:30:52,Backup,Unknown,BACKUP failed to complete the command BACKUP DATABASE BWP WITH DIFFERENTIAL. Check the backup application log for detailed messages.
12/23/2008 01:30:52,Backup,Unknown,Error: 3041<c/> Severity: 16<c/> State: 1.
12/23/2008 01:30:52,spid82,Unknown,BackupVirtualDeviceFile::C learError: failure on backup device 'SQLsafe.d00de40f-d807-4d7a-b824-b2d1f7781ff1.2'. Operating system error 995(The I/O operation has been aborted because of either a thread exit or an application request.).
12/23/2008 01:30:52,spid82,Unknown,Error: 18210<c/> Severity: 16<c/> State: 1.
12/23/2008 01:30:52,spid82,Unknown,BackupMedium::ReportIoErro r: write failure on backup device 'SQLsafe.d00de40f-d807-4d7a-b824-b2d1f7781ff1.1'. Operating system error 995(The I/O operation has been aborted because of either a thread exit or an application request.).
12/23/2008 01:30:52,spid82,Unknown,Error: 18210<c/> Severity: 16<c/> State: 1.
12/23/2008 01:30:52,spid82,Unknown,BackupMedium::ReportIoErro r: write failure on backup device 'SQLsafe.d00de40f-d807-4d7a-b824-b2d1f7781ff1'. Operating system error 995(The I/O operation has been aborted because of either a thread exit or an application request.).
12/23/2008 01:30:52,spid82,Unknown,Error: 18210<c/> Severity: 16<c/> State: 1.
12/23/2008 01:30:39,Server,Unknown,The connection has been lost with Microsoft Distributed Transaction Coordinator (MS DTC). Recovery of any in-doubt distributed transactions involving Microsoft Distributed Transaction Coordinator (MS DTC) will begin once the connection is re-established. This is an informational message only. No user action is required.