Sorry i should have also mmentioned that i have deduced that this has nothing to do with sleep mode. This actually happens when i leave my laptop inactive for 10-15mins regarrdless of whether programs are open or not and whether my laptop goes into sleep mode or not.
I can manually put it to sleep, wake it up and everything is fine. Again, this only happens when left inactive/idle for a period of 10-15mins. What could be running/connecting in that time to cause this. Kind of a very open question i know but i am baffled. i have done full system scans with AIS & MBAM but nothing so i know it is not virus/malware/spyware.