Anyone else having problems with Yahoo email?

I've been having the same problem all this week. I finally got fed up and emailed them! I even cleared the cache twice and it still happened. I can send and receive emails, but it tells me that my account is locked when I try to log-in.
 
Thanks for the "clear the cache" tip. I set Firefox to do this every time I exit all Firefox windows.

But I opened Internet Explorer and cleared that cache, too. That helped quite a bit.

Then I did a Search on my computer for all files with tmp extensions and got rid of advertising/cookies junk. I find I need to do this a few times a month.

Comcast cable internet uses McAfee. Appears to be useless.

Sending emails from yahoo is still funky. I can send a few, then suddenly I can't send at all.

Arggggh!