Strange page-specific Firefox error.

When viewing this webpage http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=300186777869
in firefox, the following error comes up:
http://i11.tinypic.com/867uoft.png

What could it be?

It doesn't appear in IE, I checked.

Hacking violation

Outbound TCP connection
Remote Address: 81.29.80.170
Remote Port: 2584 / 2585 / 2586 / 2587 / 2588 / 2589
Local Port: 2503

Please report to Ebay support immediately

Eh? Can you elaborate?

Same message on mine as yours

I'm running high security firewall protection, which tells all

Gosh you are brief. Which firewall are you using?

I am brief because I have answered about 10 questions in as many minutes

I am running Kaspersky Internet Security 2007
I am also running a number of other resident protection programs
I am also scanning all incomming outgoing IP's

You can never be too safe !
Linux Ubuntu is my next baby very soon (presently making all OK)

Mind you Internet Privacy is now an old term

Was that longer :)

It also can be somebody has wrote bad code
and firefox can't handle it and locks up
IE may just ignore it or it runs a drwatson that you can't see
I've seen this before on ebay
the dealer may be unaware of the bad script or code