Firefox not getting on line at all

[Harry Paterson]

Hi everybody,
                       I have two computers both sporting the new Ubuntu 
9.10 desktop and neither of them will get Firefox on line.
One is an XP PC partitioned and takes nearly five minutes to get to the 
file loader for Ubuntu or PC. 250 gig hard drive and
one and a half gig memory should be enough as I keep everything clean.  
The other is a dedicated new Ubuntu desktop with
250 gig hard drive and one gig of memory and now that one will only give 
me a low resolution screen despite the fact that it
worked fine before on 9.04 and neither of the computers had problems 
with Firefox before installing 9.10.
 Any help would be appreciated.

 Harry Paterson