Verify steam

Yesterday my game crashed and since then I have been unable to log in on Steam. I can start Steam and TSO, but then it ask me to verify my account. When i do that it writes. "Please verify your identity by using the same account as you currently are using in your Steam Client". Well i am (offcause). But some how it dosen't work.

I am using a mac to play on.

Any ide?

Asked in guild and no-one else who uses Steam is having same issue. Tried the usual clear cache etc, maybe run ccleaner?