Talking of the same wireless router: it's now starting to 'randomly disconnect' which is the main problem I had with my previous router and it is

annoying!!!!
I have already tried:
- Reinstalling latest router firmware (twice)
- Updating Wireless Adaptor firmware
- Moving the router (but not far)
- Disconnecting WZC (Wireless Xero Config) in Windows which is the thing that scans periodically for routers
- Changing the channel (twice)
....and it's still doing it
Router is Netgear DG834N
Adaptor is a PCI (ie non USB) WN311B
Help me please!
Thanks