Can't connect over wifi to router anymore

[Chronicle]

Hi,
I have a netgear DG834GT (http://www.netgear.com/Products/RoutersandGateways/SuperGWirelessRouters/DG834GT.aspx) which has been working fine... until today.

Yesterday, or the day before (Can't really remember) i upgraded it to V1.02.13, but after upgrading it there were no problems (i even upgraded it using a wifi connection...)... only today when i tried to use it did it start to not work.


i can use it fine using a ethernet cable, and i've tried connecting from two computers (over wifi) that were both working fine before today.

I can see the router in the windows wireless connections window, and start to connect, but it just stops at renewing your ip (that is if i have no ethernet cable plugged in). if i try with the ethernet cable in it appears to connect fine (and says its connected)...but i pull the ethernet cable out and it isn't working (still says its connected though)

Any idea what it is/what to do? Was thinking of "upgrading" it to a previous version of the firmware, but not sure if that will just create more problems.

 

[Chronicle]

I think the settings are the same.
Somehow though my main computer can connect (I didn't change any settings - it just started). My wii and laptop can't though. Laptop (not tried wii) can connect fine if i have no authentication on (no wep or whatever). But even when it is on all the settings appear to be correct (and normal computer works fine)