fairly high speed? I believe high speed (with some tweaks) is an understatement.
I have the record button as task switcher, used it today to navigate my way walking through an unknown city with both Tomtom and Igo constantly running (wanted to compare them), they were both constantly able to pinpoint my exact location, walking speed and direction. Because both only have maps with roads where cars can drive, and I was constantly taking shortcuts through terrains with no official roads, they both had to constantly recalculate. Yet I've not seen the busy icon once.
Back home I found out that PCMcontacts, AgendaOne and Mdict Wikipedia were still running in the background...
To be honest, Igo crashed once, it doesn't like my speed tweaks ;)
But it restarted with no problem
If I'd swap my Hima, it would be for a device capable of giving a decent slide show straight from the CF card from my camera, so that would mean at least 640x480. Preferably dual processor, both XP and WM6, so that would mean as well a much heavier battery and a harddisk... So it would be too heavy to carry around... naaahhh