windows problem

[Ponhovo]

every new windows a software calls, like the 'search' window synpatics creates when we click 'search', every new window start on the left top edge of the desktop

it started suddenly, without any configuration

how can i configure it to start on the center, like it always did?

[Ponhovo]

fixed it by myself

for those with the same problem:
compiz does it sometimes

set Workaround, then set Place Windows

go on it's options, choose 'centered' in the menu Placement Mode