I have a media="handheld" stylesheet which I use to serve different styles to PDAs and other such handheld devices.

I have a PDA on my desk which I use for testing purposes, and my site looks reasonably good in this.

A colleague has just got their own PDA and for some reason, when you look at the site in his PDA, all tables appear to have been linearized - in that they don't display as tables, just data in lines one underneath another.

Has anyone come across this before? Does anyone know what can we do about it?

There is nothing in the PDA stylesheet that accounts for this. The difference in the PDAs is that mine is a Dell running MS Pocket PC 4.20.0 and his is an 02 running Windows Mobile 5.