[Bug 30704] Tab icons not working properly

[mat]

Public bug reported:
https://launchpad.net/malone/bugs/30704

Affects: gedit (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed

Description:
Gedit shows an icon according to the mime-type of the file you are
editing. I can't get this feature to work properly in latest dapper: it
seems that all my tabs, no matter the content, show up with the "text
file" icon.