network card problem

[Tom Masterson]

Yes I know this is probably not the list for this but it is the best I 
have at the moment.

Over the weekend I did an update on an older dell laptop running 12.04. 
It has been doing fine with that os until now.  After the update when I 
rebooted it is no longer loading the modules for the BCM4401-B0 ethernet 
card whic means that of course that computer no longer has access to any 
network.

Can anyone think of any reason this may have happened and if there is a 
solution to it.  I have done a serch of the internet especially ubuntu and 
found no information.

Thanks
Tom