ive been trying it with different programs running and nothing as of yet, it just seems to be random... since installing Plus 2.54.74 when it first came out ive seen it happen maybe a total of 8 times... I also have msn messenger notifications enabled when contacts sign on so after messenger pops up contact has signed on that maybe Plus then shows that they changed status to online
... ill try disabling msn messenger notifications and see if it happens anymore.