tweet attacks bug?

hi guys! using the free edition of tweet attacks. yesterday i unfollowed 300 people. And i notice the program also unfollowed people who were following me. Strange...anyone else have this problem ?

yea, sometimes i also notice tweets in my timeline that somebody unfollowed me because i unfollowed him/her first

i think the rate is somewhere near 10 out of 500, so it's not a biggie