Hi,
I purchased WindowBlinds 6 and I already found a bug... Qt Applications aren't skinned correctly.
It seems that there is something wrong with the Context Menu:

This is kind of severe for me since most of the Applications I develop use Qt... :/ Also it looks stupid 
[edit] Same goes for GTK:

Greetings,
Sven Grunewaldt
System Info:
Your computer has a Windows Experience Index base score of <Unknown experience score>
WindowBlinds version : WindowBlinds 6.3 (build 110 x86 - Vista Edition)
WindowBlinds is installed correctly on this PC
WindowBlinds appears to be activated on this PC
(PnP-Monitor (Standard)) 1 is attached to NVIDIA GeForce 8600M GT [Custom Forceware 178.24]
Wblind.dll 2008/09/22 17:58:20
Wbsrv.dll 2008/09/16 08:44:22
Wbconfig.exe 2008/09/16 08:44:32
Wbload.exe 2008/04/26 16:14:14
Wbhelp.dll 2008/04/26 16:14:07
Tray.dll 2008/04/26 16:14:21
Wbload.dll 2008/04/26 16:14:28
Screen.exe 2008/07/15 11:31:09