Windowblinds paints slower and slower

The longer my computer is on, say longer than a day, Windowblinds starts painting things slower and slower. I also notice more CPU usage being taken up by this, but yet when I restart the computer, everything runs fast and no matter how many programs I have open, windowblinds will still paint them fast. The only thing that makes everything slow down is when I leave the computer on. I've also tried uninstalling windowblinds to see if the regular vista skin will slow down and it doesn't.

Here's the info:

Your computer has a Windows Experience Index base score of 3.1
Your Windows Graphics Experience score is 4.8

WindowBlinds version : WindowBlinds 6.3 (build 106 x86 - Vista Edition)

WindowBlinds is installed correctly on this PC
WindowBlinds appears to be activated on this PC
(Generic PnP Monitor) 1 is attached to ATI Radeon Xpress Series

Wblind.dll         2008/09/03 14:54:20
Wbsrv.dll         2008/07/22 10:58:10
Wbconfig.exe         2008/07/22 10:10:32
Wbload.exe         2008/04/28 11:35:14
Wbhelp.dll         2008/04/28 11:35:07
Tray.dll              2008/04/28 11:35:21
Wbload.dll              2008/07/20 19:32:28
Screen.exe         2008/07/22 10:10:09

yes, I'm aware that this is the beta, the stable version does the same thing.