Signature Updates all "old" and "New" posts?

[boo]

Ok i have a graphic forum, so we change signatures alot

is there anyway to make it update for all posts? insted of just your new posts?

thanks

boo

[Brian]

Signatures should already update for new posts. You're probably pulling a cached version of the pages with your old posts.

[boo]

hmm i added 1-3 __ 13 to my signature and it updated all new as well as old posts

any reson my forums pull a cached version? How could i stop that? Would other members have the same problem?