My husband has had a lot of trouble with yahoo lately, Serena - I've heard some very choice words coming from him about it! I don't use yahoo myself but I've had a nightmare with gmail/google for weeks - my email and blogs have been really difficult to work with of late, as they carry out all their "exciting" new changes :-(

Perhaps that is whats wrong, ill wait and see in a few days, thanks KatieN.

I have had this problem for a few months off and on, on both yahoo.com and yahoo.co.uk but the UK one is the worst. I find that navigating away from the page then going back on and deleting any emails straight away rather than reading any new ones first sometimes tricks it into working. My dad finds signing out and in again and then immediately deleting works but it doesn't for me, grrr.

Serena, I dont know if this will help you, but I had trouble a few weeks ago with certain pages and my email jumping. What I was lead to believe was it was the Norton Identity Safe had a conflict with certain sites.
I stopped using Norton Identity Safe and my computer has settled down again. Coincidence, quite possible, but it worked.

mmmmmm good point George, ill look into that, thank you.