Ubuntu Update Manager fails to download packages

I am having an issue with my Ubuntu installation (11.04) where once laptop is suspended, it never wakes-up. I can repro this by simply putting it to sleep by hitting Fn+F4. The only solution I could find is pressing Power button for 5 secs to completely power it off.

I checked Bug reports at Although I see several people reported it, they see it on different hardware. So, I will file a bug report but wanted to make sure I have all the updates.

When I brought up "Update Manager", it showed me a couple of updates but when I click to install them I got an error:

"failed to download packages, check you internet connection".

Message may be a bit misleading as it suggest connectivity is the issue but in fact solution was simply clicking "Check" button to refresh list of available updates.

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