um.. help what the heck is going on?

(symantec yaps)trojan blocked trojan from I.P lalalala blocked.. suddenly SL stops working.. I keep getting these messages once in awhile when I log on to SL and tehn can't log on cause my security keeps saying a trojan is coming through it FROM sl.exe .. two types.. trojan.bla and another fancier name "high risk" sorry I don't mean to ALARM anyone but its ALARMING me. and I can't go into sl to say it on help for fear of opening my "flood gates"..

I believe that something in the new update requires that some people need to open up another port to access SL. Can you not tell Symantec to allow SL access? Or disable it so you can play.