So now that 10.7.4 is out, I'm curious as to who's brave enough to test it with 6.0.1.1 and report on it. 

Hmmm ....

I have almost the same system as you.  I may give that a shot tomroow.

Whats it got that make it an immediate requirement? I think 10.7.3 was a dog compared to 10.7.2  I just "love" having to use Terminal cp to get any sort of reliable copying between my external drives.

If you're just running Avid on your system there's not much reason to update. But if you're running Premiere too, Adobe is recommending this update because they say it significantly improves OpenCL performance.

I also suspect a lot of people will be tempted by the fact that you can now properly switch off the feature that reopens all of your windows at startup.

Hello,
I installed the update on a system clone on a separate harddisk, mostly because of issues I had with Adobe Media Encoder (not showing video preview after update to Lion 10.7.3). These issues are solved with 10.7.4.
MC 6.0.1 is running with no problems on the updated system clone as far as I can see, but I didn't get too deep into the application. Just checked if my recent projects would open and play alright.
So I guess I will update my main system as well. Just in case I made another clone of my 10.7.3 system disk.

Cheers