I'm having the same problem.
since I've installed windowblinds my windows live messenger doesn't work.
When I log in my msn account it logs in, but 5 seconds later it logs out automaticly.
I have Windows XP sp3 32Bits, WindowBlinds 6.0 build 32 86x and the last version of windows live messenger (i think it is 9)
Please somewone help me!
Sorry for my bad english.