Just to add some info, you can get Ctrl-PgUp/PgDn to switch tab using a plugin.
See the comments on http://live.gnome.org/Gedit/KeyboardShortcuts.
(Direct link to plugin:
http://live.gnome.org/Gedit/Plugins?action=AttachFiledo=gettarget=tabpgupdown.tar.gz)
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gedit keyboard shortcuts
Thanks for your report, that's known upstream and it's a WONTFIX bug:
http://bugzilla.gnome.org/show_bug.cgi?id=357915
here is the cutpaste from the FAQ draft I have sitting on my harddisk... I
should finish it off and publish it :)
Q: Why not to use Ctrl+PgUp/PgDown to switch among tabs?
