Apple Logic Pro /LogicExpress Discussion

I upgraded my ibook and g4 tower to 10.3.6. No major crashes yet, but I find a strange 
screen flickering at times where windows are blank for a few seconds at times - something 
I never saw before. 

Also, i upgraded the M-audio driver at the same time as the OS. When I 
started Logic it said that it couldn't find the driver, and threw me back in to the builtin Mac 
soundcard. I opened the system preferences and clicked on the m-audio driver but it gave 
me an error that no PCI audio board was present. I did a number of reboots and maintence 
procedures but this never opened. However, the audio-midi utility was able to reset the 
audio preferences, and then it seemed to work fine in Logic.

I haven't pushed Logic very much yet though.