Yep, they actually removed all my addresses from the contact list on my Yahoo
account and I'm froze out from my Roadrunner account.

A buddy showed my a hard copy of the spam he recieved from me, with all of
my contacts listed as recipients.

Computer is in the shop and co-incidently has a slightly damaged hard-drive,
not related to the e-mail problem, and I'm having a new hard-drive installed so I don't
have a lot of confidence that they'll dig too deeply into the files to find out
what might have happened. After they transfer my files to the new drive
and perform a virus scan etc. they'll probably declare the computer clean.