do a clean install of 9.04 again. sounds like there is a driver issue with the 9.10 and the particular machine you are trying to use. a bios upgrade on the machine MIGHT help. just might though.
http://www-307.ibm.com/pc/support/site.wss/MIGR-43800.html#bios
try downloading the cd image again. quite possible a file has gotten corrupted.
http://www.ubuntu.com/getubuntu/download
it also recomends upgrading from 9.04 rather than the clean install although in general i agree that clean installs will usually give less problems. but then thats windows not ubuntu
http://www.ubuntu.com/getubuntu/upgrading
C&onsultant
30 years in nyc computer industry working with PC and networks banks brokerage legal etc.