Running XP Home, with fully updated NAV & Mailwasher.
On checking email this morning, Mailwasher had 29 messages to hand, all spam.
Did the usual 'process mail' routine to delete this garbage, and my 'puter tried sending 4 emails on its own. Error message then came up, saying that I couldn't send them because I didn't have a Yahoo account. (That's true, & I suspect that that was a good thing?).
On checking my OE 'Sent' box, there was no trace of anything.
Can anybody shed any light on this? I've never seen it before, & I'm somewhat concerned. A manual AV scan, AdAware & Spybot check hasn't shown anything.