Guys,
Thanks for all your suggestions.
Richard, that's an interesting approach re the 1.5 times rule for the paging file - I hadn't thought of it the way you described in your PS, but now you've mentioned it, it makes sense. However, because I have spare space on a FAT32 partition, I've fixed the size at 1.5 times ram and placed it there. I found a smaller pagefile slowed the machine somewhat.
DR, I downloaded and tried MoreSpace, but it doesn't seem to tell me what is using that part of the disk. Am I missing something here?
At least I've fixed my broken Media Player, and with a trimmed down load of apps and stuff running in the background have a faster laptop. A small silver lining
Cheers
AA