I tried your suggestion buteman which has improved things. Early days, but as yet no hang up's.
I was having problems with allot of web sites, this one (PC Advisor) and the Tom Tom web site being one of the worst. Even now, although not freezing, this site (PC Advisor) is still slow at opening pages. Mind you, it's never been the fastest kid on the block.
Thank you both for your suggestions. Fingers crossed all is better.