I don't think it's me this time..

..
It appeared in approx. the last 2 or 3 versions of EC.
Every now and then the editor freezes, but it's only when I'm switching between many child windows very frequently.
If I maximise the child windows, and switch between them from the Project Explorer window.. I don't get this problem.
It seems that mouse selecting one child window(non-maximised), from another .. creates the freeze, but it's not consistent though !
Edt: Before I forget... It has always happened when I've yet to save edits.. as I'm always losing editing changes... I now save every minute or so, to get around this. ;)
System:
Win7 Pro.. SP1 (I think it is)
16GB ram
etc...
Plenty of disk space on 6 HDisks