I am using the keyboard layout English (US international with dead keys). I type in English and in Portuguese, which makes use of characters such as "ç" and "é".
When I discovered this layout it worked beautifully: I type "'", nothing happens, then I type "e", and "é" is produced. Then all of a sudden the dead keys had risen from their graves: trying to do the same above would produce this: 'e.
I played around changing keyboard layouts back and forth and then all of a sudden it started working again.
Is this a bug? Couldn't find anything exactly like I am experiencing. Any workarounds?
Edit: forgot to mention, running 12.04 here.