If this was fixed in 3.0.7 then it's broken again in 3.0.8. i'm seeing this now on a machine i back-revved from 11.04.
However... as a last-ditch effort i ran 'apt-get update' ... upgrade after leaving the Software Center and flash got installed. i did a lot of tinkering/trying, so i can't say what finally forced it to install.
If this was fixed in 3.0.7 then it's broken again in 3.0.8. i'm seeing this now on a machine i back-revved from 11.04.
However... as a last-ditch effort i ran 'apt-get update' ... upgrade after leaving the Software Center and flash got installed. i did a lot of tinkering/trying, so i can't say what finally forced it to install.