I really don't know but for me it usually happens when I rapidly click on a lot of threads or look at my old posts.

idk, it's some kind of forum mechanical that block continuous search. I guess that's becuz the searching takes a lot of data resources so they limit the search

usually when ur internet is slow or if u spam click things.

It can happen if you're doing two searches at the same time. Searches include (not limited to):
View unanswered posts
View active topics
View new posts
View your posts
Searching for posts/topics
Searching for members (not sure on this one)

Searching for members do include...

and not only two searches at the same time, if you do each search at a time, and the time between the two searches is not long enough, then u'll get the same msg

supppl i see you post lot's of important questions but could you please make the titles more related to your problem so the other players who have the same problem won't create a thread about it if it's solved

-mxmxm

is that important?

we don't really care wat the title say, just see a new topic and say "hey post count ++ coming" and jump in...

well that "rule" applies only to Spam thread but on help desk ppl come to get help and it's hard to find helpful info when you have "why does this happens????"
imo

well the first thing is that I don't think ppl will look for every thread for their problems, they will just make another thread so it's not quite a big problem