I have upgraded processoer from XP2100 to XP3200

I have recently updated my processor from an XP2100 to an XP3200. When I first ran BOINC using the new processor, it would complete work units in about 2 hours. I have since had a new installtion of XP (SP2)and now a work unit takes over 4 hours.........is there any reason why this would happen?? I am running version 4.09 although is says it is 4.05.......this was updated from this site.

The latest version of Boinc is 4.09 as you can see when you click on "help" "about". The latest version of the application, in this case S@H, is 4.05 as you can see in the work tab.
The new WU's from Seti needs some 40% more time then the previous WU's with v4.03.

Greetings from Belgium.

Help Desk: use "Most recent answer first" sorting.