I don't have experience with pxe or net booting, but I am booting a
snapshot from around 20080617 from an 8GB SD card on an eee 900 with
almost no problems. I suppose about 1 in 10 boots it hangs, can't
remember where, I will take more notice next time. But the other 9 times
out of 10 it boots fine. No wlan obviously but otherwise its great, I
have KDE 3.5.9 running and performance is quite good. I take it with me
on my bicycle :)