I think I've found another one, Skype: it opens the first time, then you close it and if you reopen it's not present neither it the top bar or in natty's launcher, so you can only kill it with system monitor....
I think I've found another one, Skype: it opens the first time, then you close it and if you reopen it's not present neither it the top bar or in natty's launcher, so you can only kill it with system monitor....