[Typo3] Slow page - help's really needed

[Iona]

> first, if you post in here again, could you try not to hijack another 
> post? mistake could happen to anyone.

I'm really sorry, that was a mistake. I apalogize.

> second, it might be helpfull to post the url of your page in here.
> for now it's just guessing what could go wrong

Yes, of course: here's the url:
http://alvheim.ida.his.se/dsuweb/index.php?id=2

The cache is on, so that's not the problem. Might there be any problems concerning version of Apache or php?
We're using:

Apache: 1.3.26
PHP: 4.3.3

Thanks for helping! =)
Sincere,
Iona