>>> I will report back my experiences.
> Kees,
>
> 55% memory is considered to be the optimum memory allocation for PS,
> increasing the ammount past this can cause problems with the OS.
> Rather than increase the allocation it is better to increase the ammount of
> RAM.
> Added memory idealy needs to be in matched pairs, 2 x 512, 2 x 1GB etc.,
> Did you try reducing the history states in preferences?
>
> TWK
>
>
Hi Toobi-Won,

Took a while to get back to this issue because I was on the road once
again. So far I have noticed a slight improvement after I allocated more
RAM to PS. Now I suffer hardly any memory problems. You were right about
the immense amount of RAM neccesary to perform tasks in multiple layers
on for instance RAW files.

What the unequal memory bits concernes, the problems I reported started
way before I changed the second 512 MB for a 1 Gig, so you may be right
about that, but in my opinion it has nothing to do with the problem
reported. Nevertheless I will consider bying another 1 Gig bit to put
into the main slot.

And yes, I reduced the historie states also, maybe that did the rest...

Thanks for your .

Kees