Snow Leopard: Problems remembering password

Dear folks,

I have been searching around for weeks. Usually I find what I need, but maybe I am approaching this one with the wrong search strings. So if it obvious, I am sorry.

Anyway, I have my loooovely 15" uMBP which is a couple of months old. The biggest standard configuration (don't know if that matters).

However I reinstalled from Leopard to Snow Leopard (full reinstall, 10.6.2 - all updated), and ever since I have needed to enter password for everything and everywhere I want to login.

I have the problems in everything from the Airport program, Adium, MSN (yeah, tried that instead of Adium to see if Adium was the problem), Safari (and it is turned on in the settings)...

... so, any clues of what I should do and how to solve this? It is a bit of a pain in the ass to be honest.

Thanks!

 

Well, I don't mind that it does not remember all of those from "before Snow Leopard" ... but it won't remember if I e.g. say "Remember password" in MSN. Or Adium, or Mail... is my keychain bad then? Can I somehow reset it?