USB host mode is really important for me as I wan't to upload images taken with my DSLR camera while on the move.

As you might know most if not all of hobbyist/pro range DSLR cameras use Compact Flash cards and the only sane way to copy images to a computer (or similar device) is through USB. (or a CF card reader that plugs into USB/IDE/SATA bus).

IMHO "mobile computer" needs to have an USB host mode. People have lots of USB devices and being able to use them with their "mobile computer" as with any other computer is a must.

I'm looking for a device which would combine my cellphone and portable computer so I wouldn't have to lug both with me. N900 sounds almost like it. It has everything in it and runs on open source OS...everything except USB host mode.

From what i've read here i got an impression that the next maemo device after N900 will have the USB host. I think i'll pass this one and wait for it.