Disappearing Comments

So...I had an older post onto which a lot of spam (44 spams) had been dumped, ending up listed as "suspicious comments."   I carefully marked each one, then used the "mass action" control to get rid of them.    Selected the right choice, so that only the marked comments would be deleted, and went on from there.   But instead, ALL comments were deleted.  Every single one of them, the innocent non-spam as well as the guilty spam.

So if you had a comment on the post about spoiler space for Kings of the North, and it's gone, it wasn't my intention.    If LJ's mass actions on comments keeps malfunctioning, I won't be able to use it, and the alternative is the much slower process of deleting the spam comments one by one.