I think Joseph Moore was right on, and you should have acepted his answer.
I, too, believe that you have a virus, more likely a trojan. A couple of my users were recently infected with the Backdoor.Berbew.F trojan.
The Backdoor.Berbew.F is a Backdoor Trojan horse that allows a compromised computer to be used as a Web proxy. This Trojan also attempts to steal cached passwords from an infected computer and send them to a Web site in some far away place like Estonia.
The trojan creates files with names that are apparently no more than random characters. The ones I found on my users' computers were:
jsrxeeli.exe
lhtotcol.exe
qzlwfkyt.exe
No reference to any of those files anywhere - including Symantec itself - even though they were indeed trojans.
Moreover, Norton antivirus standard edition did not pick it up. However, Norton's Corporate edition did indeed identify those files as infected with this trojan.
That's what you've got, at least I'd wager a buck that you do.