I forgot who it was that doubted Gimp would run well on the N800/N810, but I do have a screenshot for you.

It honestly runs pretty well. I have a 640x480 pic open here with 3 layers. 11MB of swap is used at this point and that's with xfce loaded as well. Drawing lines with brush and airbrush are reasonably quick and rendering a gradient or that cloud pattern you see took less than 30 seconds each. Drawing on a semi-opaque layer definitely gives you a speed hit, though. Overall this actually worked a lot better than I thought it would.