USB conflict

[mphasis]

hiya,im having a bit of trouble getting the OS updates above 3.0.0.0 to work properly.everytime i try and put anything higher on and load logic it cant scan the AU for the virusTI and comes up with a warning saying there is a conflict with a program called protect executer which is to do with my dongle that i use for nexus 2.when i take the dongle out and run the newer version of OS it works fine but thats not really good cause i want to be able to use nexus aswell.it does give the option to ignore the issue on the warning menu but then it will run normal for about 10 mins and then theres a horrible screechin sound all the LED's go out it kind of resets it self and then all the presets are all out of sync.
before this problem i have never had a problem with my virus concerning the OS and i was thanking myself lucky when reading the posts about problems people have on here but now im in the same boat.

is anybody else getting this problem?

i am using leopard 10.5.7 an logic 8.0.2 by the way,

thanks.