repeated info about blocked trojan called iovagent.dll

hi, 

since a few days i keep getting a pop up information from internet security about a trojan beeing blocked.

it allways apears when i am in an online browser game. i play this one since almost three years and never had problems. no other browser windows are open.

the name of the tjojan is iovagent.dll

trying to find anything about this by norton very dangerous trojan i get no information at all.

exept for the question if i meant invagent.dll but i did not. iovagent is the right name an it's complete filename would be:

c:\windows\syswow64\iovagent.dll

can anyone help me out?

is it realy a trojan? is it possible that this ist spread through the online game? and if so, why doesn't anyone else seem to have this trojan?

i am quite puzzled. thank you for helping and sorry for any wrong writing, since englisch is not my native language