Hi,
it seems that there is a simple pattern to the spam that is posted on
the bug tracker: I get one message in the morning and one in the evening
(GMT+1) every day, all posted into the same tracker item about the HP
filter. Others may get more if it relates to more items.
So my simple forecast would be that this is not going away by itself.
I'm afraid we will have to disable anonymous postings.
cheers (nevertheless...)
sven