If you are running DVBLink 2 then you need to head over to the forums at www.DVBLogic.com and download the latest beta update. As well as fixing a memory leak this will extend the beta period which is due to expire shortly.
I’ve been trying the new patch for a few hours and it seems quite a bit stabler than the original release. This is only an interim release and the guys at DVBLogic are working hard to get the new Network tuner package out shortly.