tab completion creates empty spaces

Binary package hint: gnome-terminal

When typing - for example - cat /etc[Tabkey] this does not show possible sub-directories right away, but creates a whitespace like cat etc/ first. I then have to press [backkey] to move the cursor to the last slash before I can continue.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: gnome-terminal 2.32.1-0ubuntu3
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Wed Apr 13 20:11:21 2011
ExecutablePath: /usr/bin/gnome-terminal
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta i386 (20110410)
ProcEnviron:
 LANGUAGE=de_DE:en
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-terminal
UpgradeStatus: No upgrade log present (probably fresh install)
XsessionErrors: (nautilus:1613): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed