My netbook uses Windows 7 and I have a problem loading web pages on Internet Explorer - it will not load anything past the initial search. Have run full Norton System scan and nothing found have run PC clean up programmes and deleted loads of stuff and still not working.
I think I've finally solved it, did a complete system restore in the end, must have been something to do with the latest updates that were installed - should have been suspicious when it took hours for them to download!!
Thanks everyone for their replies, I now have some helpful tips for if/when it happens again!