Stalled Boot

[david]

I have run into a problem, and have found this several times on several 
computers. The boot up process stalls.

I loaded a HD with xubuntu 6.06
Installed the HD into an older Gateway system (PII 350, 256 mg Ram, 6 
Gig HD, DVD Rom)

The grub loaded and screen shifted to initial text
Gets to Save Default and then Boot  Then stalls.

Normally the next line is the linux kernal starting up.

I have found this several times on another machine, and ended up loading 
Suse on that machine.

Has anyone else run into this, and found a solution?

David K