Olá
I've been cruising around on some translations and found a problem that is common on most of them, including the original english.
On chat logging section, inside preferences menu, we can chose the style to use on logs, html or plain text. And below these options there's a list of other options, some of them are common to both styles.
The problem here is that the same option on different styles must have different ampersends.
Check the example:
http://img517.imageshack.us/my.php?image=ampersends8hl.png
And this is because when chosing one style we are still inside the same window, the other gets hidden and not kicked from the window.
There's 19 ampersends in this window (counting with apply and import/export buttons), it's almost a complete alphabet. So you must take special care not to repeat ampersends, even if is on features with the same name.
You should remember that the only way to be sure there's no collisions is not by looking at ampersends, but by physically test them.
(one more reason not to use/create checkers as they would hardly find these problems)