On Wednesday 02 May 2012, Slávek Banko wrote:
> Problems with crashes GTK programs I have seen only if I had installed
> kgtk-qt3-trinity (and related), which replacing dialog boxes. But with
> gtk-qt-engine-trinity, which only changes the appearance of gui widgets,
> it does not fall.
>
> Note: These problems apparently not related to the update 3.5.13.1.
>
> Slavek

This is a great piece of information. For month I was not able to use

 * lazarus-ide
 * dropbox
 * calibre

as a normal user. The only work-arround was using 'sudo NAMEOFAPPLICATION'.

You saved my live! I've googled a lot to know what could be the culprit 
without success. Uninstalling kgtk-qt3-trinity brought all back to normal. 
What a big step forward!

kgtk-qt3-trinity should not be installed by default. Or there should be a big 
warning on the www.trinitydesktop.org page!

Thanks a lot from a now more happy TDE user
Gerhard