the Yahoo server could have been busy or any number of other reasons.
I have used Yahoo for years and never had a problem.
when you 'system restored' did you check to see if the prior version of Yahoo had been uninstalled?
go to the main Yahoo and try and d/l somthing else like a free game and see if that works. then do Messenger.
I had to restore my xp and when i tried to reinstall yahoo messenger i got an error 'dll libray missing' now it doesn't state which dll library it is..sheshhhh
i cant' download yahoo messenger as a result..any clues anyone??