My two cents here if it d help someone:
This bug was triggered to my system (Jaunty) when i edited the program menu by remmoving some entries. Eg. removing the metacity entries (About 10 of them) which i have i no idea how they appeared in the program menu -unchecked- caused metacity not to run. Similarly removing Dolphin file manager entry (several entries) caused nautilus (the default one) not to open the shortcuts from the places menu.
My two cents here if it d help someone:
This bug was triggered to my system (Jaunty) when i edited the program menu by remmoving some entries. Eg. removing the metacity entries (About 10 of them) which i have i no idea how they appeared in the program menu -unchecked- caused metacity not to run. Similarly removing Dolphin file manager entry (several entries) caused nautilus (the default one) not to open the shortcuts from the places menu.