Virgin Cable with Wireless and P2P

Hi,

I have recently setup the a netgear wgt624 v3 wireless router. Currently I have 1 laptop (vista) running wireless, however I have found that when i run any P2P programs the wireless connection will just drop sometimes after 5 mins other times after 25mins, and I have to reset the router and laptop. I have VIRGIN Cable, so the modem is built into the Virgin Setop box. I have disabled the firewall, UPnP, etc, however nothing fixes it. if i dont have any P2P programs running it works 100% for hours without problems.
Hardware Version V3H1
Firmware Version V2.0.16_1.0.1

Is there any settings on the router or Vista that is known to cuase this issue.

Regards
Matt