Network Connection problems after Upgrade to 10.04 LTS from 08.04 LTS

[Jay Ridgley]

Folks,

I am having severe problems connecting after doing an upgrade on my laptop...

I am no longer able to connect to any system on or from my home lan (It was 
working before the upgrade)!!

History:

I shut down my laptop and packed it up for a trip to my son's for the weekend. 
While there we(he and I) were trying to connect to his network with my wireless 
card (it had never worked there - worked fine here) so he suggested that I 
upgrade to 10.04. After that we still could not get wireless to work so I 
continued to use the wired connection we had set up. That worked fine there.

Today I brought it home and tried to connect to my network and can not get a 
connection using either wired or wireless hardware.

The /etc/hosts and /etc/interfaces files are correct; as far  as I can tell.
I have also set up both a wired and a wireless entry using the network tools dialog.

Where do I begin to look for the problem???

NOTE: Until this is fixed and I know what caused the problems, I will be using 
08.04 on all my production systems and may return the laptop to it as well!

Thanks,
Jay
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Jay Ridgley
jridgley2 at austin.rr.com
Registered Linux User ID - 9115
Registered Ubuntu User ID - 23320