All Apologies

First off, please except my apologies, it seems when I logged on this morning I was rudely awakened by 33 e-mail failures, all of which I did not send.  I've never, ever experienced anything like this before.  Not sure where to start, I'm assuming I have a bug, which I'm loaded with virus security, so I'm not sure how it got in.  Thought I would post this for all to read, again I apologize for any inconvenience.

I shall run a scan with Norton and check with Yahoo mail ........ what fun today brings!

*** UPDATE ***

First of all, I'd like to thank those who have responded with help, deeply appreciated.
Secondly, I can't express my apologies enough, I'm truly sorry for any inconvenience.

I've changed my password with ATT/ my e-mail provider, hopefully this does the trick.

I'm not sure what and how I was infected, but my computer seems okay, and the only
thing I did out of the ordinary yesterday, was I went to the Vimeo video site and watched
some Photoshop CS5 tutorials, not sure if that's the culprit or not, but to be safe, I will not
return anytime soon.

I'm understandingly getting so many e-mail responses my head hurts, and if you by any chance get
further strange e-mails supposedly from me, please let me know, thanks.

Again, please do not follow any links within the supposedly e-mails sent from me, just to be safe!

Again, I'm so sorry.

***** CHANGING MY E-MAIL PASSWORD SEEMS TO HAVE WORKED AND THOSE OF YOU WHO HAVE RECEIVED AN E-MAIL FROM ME SHOULD BE FINE, BUT JUST TO BE EXTRA CAUTIOUS, DELETE THE E-MAIL IMMEDIATELY *****


Jerry