I just tried to set up a VM using VirtualBox and Ubuntu 10.10 desktop edition. Installation proceeded fine, but at ~60-80% I got a message that it failed and it's most likely a defect CD or a read error. So I checked the MD5 sum of the ISO (ubuntu-10.10-desktop-i386.iso) which gave me
5f4ab3c8e40f8dda084213caa842325c, but should be
59d15a16ce90c8ee97fa7c211b7673a8 according to various sources, including the official MD5 site.
I redownloaded and got the same wrong MD5 sum, after that I used the BitTorrent download - still the same wrong sum. All downloads were made from http://www.ubuntu.com/desktop/get-ubuntu/download , I'm trying a third download right now from german CHIP, perhaps this will give the correct MD5 sum (EDIT: No, this even gives another wrong one:
I tried different MD5 sum checkers (no difference) and googled for the MD5 sum (0 hits). My PC is a netbook with Windows 7 Starter.
UPDATE: Got the correct MD5 sum now by downloading via BitTorrent again. Memory and HD seem to be OK, thanks for all the help.