I'm having some issues when connecting to my house's wifi from my Ubuntu 10.10 laptop.

If the connection doesn't exists, when selecting the network (and after entering the WPA2 password) I'm able to connect. Once the connection is saved, when trying to reconnect, Network Manager works for a minute or so and then fails; the only way to reconnect then is to delete the saved connection and re-select the network from the list of available wireless networks. The same network works with no issues on the same laptop when running Win7, and on other wireless networks when running Ubuntu.

Is there a Network Manager log which I can take a look at for troubleshooting the issue? Are there any tools for checking the wifi status?