I would like to add that downgrading from plasma-widget-network-manager Version: 0.0+svn966653-0ubuntu0.1 (the version after the upgrade to kde 4.3 RC3) to the previous version of plasma-widget-network-manager Version: 0.0+svn930811-0ubuntu2 (the version before the upgrade) seem not to fix the problem. So this may not be a problem with the plasma-widget-network-manager package its self
I would like to add that downgrading from plasma- widget- network- manager Version: 0.0+svn966653- 0ubuntu0. 1 (the version after the upgrade to kde 4.3 RC3) to the previous version of plasma- widget- network- manager Version: 0.0+svn930811- 0ubuntu2 (the version before the upgrade) seem not to fix the problem. So this may not be a problem with the plasma- widget- network- manager package its self