I have installed the latest version 4.40_329_HD on my MAC (OSX 10.6.4). The layer window flickers like mad when I try to turn HUD off. Also the bar by the percentage figures at the bottom of the screen are flickering like mad (sorry for the non technical terminology).
When I run the pervious version on the same machine all is ok
Any idea what I can do?
Which mac? What spec?
which previous version?

make sure you installed all 10.6.4 updates including graphics update.