Wrong key mapping in Qt applications

[Marcelo Magno T. Sales]

Hello,

I've just upgraded from Karmic to Maverick (reinstalled from scratch) 
and now every time I press a "'" followed by a "c" I get a "ć". With 
every other version until Karmic, I would get a "ç".
In fact, when running gtk applications I still get a "ç" in Maverick. 
The problem happens only when typing in Qt applications.
How can I get my "ç" back?
Just for the record, I have tested this in a machine with Lucid 
installed and also get a "ć" instead of "ç".

Thanks,

Marcelo