Out of all those issues, the only one I've really had is apps crash randomly (though they are extras-devel apps). And the occasional freeze due to Mappero's early development.

There's not much of a point in getting the N900 unless it

a) has the hardware you really want or
b) you want to run desktop software like OpenOffice or
c) you feverishly want to support only open source for some reason

For me it's pretty much a and b.