Looking at the stats, for the entire year of 2003 I've lost five perk rides: (3) F4U-1C's and (2) Tigers. All of those were lost in January, nearly two months before the recent loss in perk points occurred. At face value, with no arena-balance modifiers, thats less than 20% of the missing points.
So... if there was someone else using my account, they haven't lost any perk rides in 60 days. And no perk rides were flown during the time that the points were lost. Again, I restate that the points were lost during a time when no flights occured.
MiG