I just upgraded to V8 fixpack 15 from V8 fixpack 9. During our weekly maintenance the runstats runtime doubled. We're running Solaris 8 OS.
Any ideas why ?

pdcliq-a:/app/home/db2inst1/scripts> db2level
DB21085I Instance "db2inst1" uses "64" bits and DB2 code release "SQL08028"
with level identifier "03090106".
Informational tokens are "DB2 v8.1.0.136", "s070720", "U810953", and FixPak
Product is installed at "/opt/IBM/db2/V8.1".