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 launchpad.net. 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.