Ignore that, I just remembered that you said it was a linux Eee. Try going into the firefox options menu and deleting all the private data in the privacy settings tab. Ensure you clear everything by ticking all the boxes.
Stating the obvious, it's definitely not right. A friend of mine has one and I've been constantly amazed how fast it is.
Asus do have fairly good support via email, so that may be an avenue you would like to try and as alan2273 has already pointed out, the Eee forum has amazingly friendly and dedicated people who would probably be better positioned to help you.
You could also try updating the system. It's a modified XANDROS system and like all freshly installed factory installations, there's just a chance an update may cure the problem.
This thread is now locked and can not be replied to.