well I set up my SIMpad for surfing and x forwarding.
I removed the home partition, installed Angstrom X11, installed Minimo, removed dropbear and installed openssh. I now use minimo for quick browsing of any site (gmail, flickr, ebay), or x forwarding to run firefox, deluge or any other desktop app on the SIM.
Minimo is pretty stable - occasionally resets the machine (presumably when it runs out of memory) but manages ajax and complex sites very well. X forwarding is pretty good - don't expect to watch video or fluid flash animation but for full browser functionality and access to all the other desktop apps, it's great.
I've put a how to: x forwarding on the SIMpad
if anyone else wants to try it.