Need some help. Wifi Issue

I did a quick search but found nothing.

I find with my Bold I am always loosing my wifi connection. In the top status it says "Rogers - "Wifi name", however the wifi icon periodically goes to grey instead of lit up.

I'd say it does this every 20 mins, i then have to reboot or delete that wifi profile and re-enter the information in order to connect again.

Is there a way I can stop this from happening? And it has nothing to do with the router here, as my work laptop is connected to wifi and other co-workers have their bb's/iPhone's connected to the wifi at all times no problem.

I am running OS 5.0.0.681.

Thanks.

Have a look here:

http://forums.crackberry.com/f3/complete-wifi-how-47229