Supposedly I have a trojan on my computer but only one program can find it

Question

I did a yahoo anti spy scan and it found a trojan but cant remove it.

I then did a Mcafee internet security scan. that could not even find the trojan. I removed that software because i dont like it(came with new computer). I installed Trend Micro internet security and it also can not find the trojan.

i downloaded the free ad- adware 2008 and that also has not found anything.

i'm getting frustrated because i have no clue if i really have a trojan.

i'm not downloading spy bot because that screwed up my last computer.

I have also already tried Kaspersky online scan and it found nothing. please dont recommend a free anti virus program because u can not have more then one anti virus program on ur computer.

Is there anything else out there worth trying?

Answer 1

If Yahoo found it then it might have gotten rid of it, or put it in Quarantine.  Then  the others wouldn't find it.

Answer 2

If you couldn't find anything with all those scans its was probably a False Positive if you really want to check it out, look for the "suspect" file manually and delete it if you think its a threat  

Answer 3

go back to antispy,since it picked it up, and get the actual name of it. o to search and see if it pops up then youll know.get rid of your antivirus..it has proven itself inefctive...get threatfire forFREE