Sorry, I've just realized that this problem doesn't occur in gedit only.I have the same problem in Nautilus: if I click on a file to rename it and then press Alt or Ctrl, Nautilus freezes in the same way.
It must be some shared library. Do you know which? -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
