To start I would download the latest firmware which is 2.0.2.1. After you perform the firmware upgrade you should reset
the router back to factory defaults. AFter this configure the router with your wireless settings and give it a
try again. If you still have problems after this I would suggest that you give us a call at the Cisco Small
Business Support Center (1-866-606-1866) and let us open up a case for you on this issue.
THANKS
Rick Roe
Cisco Small Business Support Center