Glad they have finally worked out what the problem is Neil and hope that you get a speedy recovery. The hitreg in BF3 misses you mate.
Neil, just out of interest do you get much exercise?
I remember reading in the paper a while back that more young people are being hospitalised with blood clots and it's due to being immobile in front of a PC all day at home and at work.
I know you said that it runs in your family but making sure you're more active can't hurt, right?