I installed Lubuntu 12.04 (without restricted extras) in a virtualbox-vm to do some additional testing and found that no problems with lxpanelctl occur both before and after upgrading packages. So it seems the problem is related to some software not included in the base lubuntu install or to specific hardware setups.
Some wild guesses: Is anybody having this problem while not having any proprietary drivers installed? If not: Is there somebody with this problem with no proprietary graphics drivers installed? And even more specific: Is somebody having this problem without the proprietary nvidia driver installed? (Shame on me...) Does anybody observe this problem with a clean install including restricted extras (before and/or after upgrading packages)?
I installed Lubuntu 12.04 (without restricted extras) in a virtualbox-vm to do some additional testing and found that no problems with lxpanelctl occur both before and after upgrading packages. So it seems the problem is related to some software not included in the base lubuntu install or to specific hardware setups.
Some wild guesses: Is anybody having this problem while not having any proprietary drivers installed? If not: Is there somebody with this problem with no proprietary graphics drivers installed? And even more specific: Is somebody having this problem without the proprietary nvidia driver installed? (Shame on me...) Does anybody observe this problem with a clean install including restricted extras (before and/or after upgrading packages)?