this bug is closed, and the fix has been in Ubuntu since vpnc/0.5.3r449-2.1 (likely 11.04)
if there are other, similar issues, please do not discuss them here, but open a new bug for that
and please check if any such issue is already fixed in vpnc/0.5.3r512-1 (in 12.04), which is the first SVN snapshot (new upstream version) since 2010 and should fix a fair number of issues discussed on the developer list in recent years
this bug is closed, and the fix has been in Ubuntu since vpnc/0.5.3r449-2.1 (likely 11.04)
if there are other, similar issues, please do not discuss them here, but open a new bug for that
and please check if any such issue is already fixed in vpnc/0.5.3r512-1 (in 12.04), which is the first SVN snapshot (new upstream version) since 2010 and should fix a fair number of issues discussed on the developer list in recent years