As an update on my issue:
-PC collected on Thursday 22nd March
-Rebuilt was granted
-Ready for dispatch on Tuesday 27th March
I am expecting the PC tomorrow which is just perfect! I am still impressed by the technical department in charge of RMA, the speed of their service is very quick and efficient. They kept me informed by email and always answer any queries. Thank you!
Got my PC today, spent most of the evening installing games but so far I was able to play Battlefield 3 and Skyrim 3D surround without any issues and the new GTX 680 is quite quiet compare to the GTX 580. I'll wait a week to write a review but will try to post some pictures tomorrow. I am extremelly thankful to the technical department to get my RMA sort it in less than a week.
It is pretty cool. Trying to go to bed but can't stop downloading games, btw any suggestions on a mouse mat? The one I got is pretty small and was struggling to aim acccurately in BF3.