>
>  
> I had the same problem when running Squeak on Vista. It turned out 
> that it was due to NOD32 anti-virus checking the changes file when it 
> was written to. Disabling the .CHANGES extension in NOD32 fixed the 
> problem, and now Squeak runs fine.
>  
>
Cooool.... really coool

This is it... Thanks a lot Andrew, you solved the problem that was 
hassling me for weeks... I owe you a beer ;)
I actually had an equivalent problem with XP (slow snapshoting method) 
still due to NOD32 ... as it'is the common point between my 2 systems !
So, we need to be aware that NOD32 (AMON-Access scanner) interfere with 
the changes files !

Thanks again
Cédrick