illegal action detected

i was cleaning out the notifications in my inbox and got this message.

the first several times i tried to delete them, nothing happened. i was able to delete messages one at a time, but not in batch.

then the batch delete finally worked and this is what i saw.

[IMG]http://i660.photobucket.com/albums/uu322/soooweee/illegalchoice.jpg[/IMG]