I enter the forum very slow.

[Munch]

Maybe becouse use IE,try Mozilla

I use Mozilla and it's slow for me sometimes.

It's not really the forum's fault, it's SMF. You get google bots and other bots printing topics and getting information and statistics (if they come on this forum, at least). And also if Peter makes back-ups (Auto) of the forum incase it gets hacked or something, then the site will be slow while it's creating the back up.

I could be wrong though, could be something really different but that's usually the case with SMF forums (and my SMF forum).