I've had an 860 for a few years, but upgraded to a "new" 3100 yesterday. Actually it is 2nd hand but appears to be in perfect condition, the 2nd hand Sofmap shop in Akihabara has several for ¥31-33,000 if anyone is interested (and 3200s for ¥40,000 or so etc).
So far I've had no real problem setting it up, but I've encountered a small annoyance with freenoteqt and qpdf viewer, in that when I export a pdf from the former, the text does not appear in the latter. The text really is there in the pdf, I can see it when I move the file to a PC. So it seems to be a qpdf issue. I have qpdf2_freetype-2.2.1-20040217_arm.ipk which was the latest I found...does anyone else have this problem? [I didn't have freenoteqt on my 860, but now I'm looking again through the reams of potentially useful software.]