R 52 Can't connect to WLAN

[G.R.]

I just got a new Netgear WPNT 834 router, which i've managed to get working normaly for wired lan but when using wlan i keep getting Error messsage 010 (something wrong with the encryption)
yesterday i'could connect to the network 2 or 3 times and it worked without the encription, today i've tried all possible settings but couldn't connect. I 've tried updating wlan drivers and router firmware and still error 010.
Does anyone have any idea about what I should do?
Thanks!