I just started a new character, and ever time I attack a mob, another mob also gets aggro'd and I have to fight 1v2.

I know some mobs are supposed to be linked, but this is happening with everything. The little ladybugs and rats right outside town are behaving this way. It's not always enemies of the same type either. Just anything remotely nearby will also attack me. This includes the passive higher level mobs, like the big turtles in Thanalan (as a result, I do a lot of running).

I have leveled 3 other characters, and none of them had this problem. It's happening to my husband as well, and we're both thaumaturges.

Anyone have any idea about what's going on?