Qt Creator freezes on CTRL + Mouse Move in Editor

When you press CTRL and move the cursor across the editor while editing a C++-File (e.g. to follow a symbol) the whole program freezes for about 1 - 30 seconds (depending on what is hovered and what distance you moved the cursor).

This occured approximately two or three weeks ago first.

== Update 09-13-2014 ==
I was able to track down the issue:

When BaseTextEditorWidget::mouseMoveEvent receives events it ends up calling CppEditorWidget::findLinkAt (C++ Editor) which takes some time to process (on my machine and project around 40ms). If you keep moving the mouse around, new events event are generated and added to the event-queue and then handeled subsequently. This leads to very high delays if the distance you moved was quite large.

See comments for my proposed fix.