Strange problem

Hi, I have a very strange problem with pgAdmin under Linux. The Linux distribution is KUbuntu Dapper Drake and the
versionof pgAdmin is 1.4.1, but  also the problem happened with pgAdmin 1.2. Some time when the text in the editor is
selectedand I click on a editor window, my mouse cursor turn into a square angle, like when a selected text is dragged
butwithout the document icon. So when this happen my mouse is locked and unusable, if I click mouse buttons they do
nothing.I need to close pgAdmin to get it released. This strange problem happen after some time I'm using the program
andI don't know how to reproduce It with certainty. I hope someone can reproduce this and inquire on it.
 

Bye Malix