Friend of mine has a really weird problem connecting wirelessly to a Lime router. He has a Nexxt wireless USB adapter in his desktop (Win7 Pro), and it's showing that it's online and passing data. But it says the router password is invalid in the wireless connection dialog. I've connected easily to that router using that password on my phone, and using the ethernet cable on the desktop, so it isn't a router issue. The desktop also easily connects to my AndroidAP hotspot which is password protected, so it's not the adapter.
I can only think of two things out of the ordinary. There was a saved wifi profile for the router which doesn't require a password, so I'm thinking he'd successfully connected before to it before. Also, I didn't check the security type (probably WPA), but that password looked pretty long to me: 17 characters. Could there be some incompatibility in the password length?