help with magma production application

[Esteban Lorenzano]

Hi, 
I have a production application, which needs to have a very few amount of objects (less than 2k, in a very short graph of two or tree levels, never more than four, and that is very rare). For that, I configured a Pharo 1.1.1 (dev), with latest magma, and it is running in a very strange linux (I think is suse, but I can't know), with latest unix cog vm. 
I have two problems, but while I can live with one of them, the other one is killing me :)

First, the most important one: time to time, magma use is crashing the application. I think this is because the memory consumption scales up to 300M very fast, and it shouldn't be like that (at start, the image is around 60M)... so, I try to commit a graph of no more than 10 objects (and not really big), and the image crashes. This behavior was not present before, when I was using a "image persistence" strategy. 

Second: performance. Yes, everybody complains about this... and it seems to be some guidelines, that I shouldn't be following... but I'll explain a little my structure, maybe you know what I'm doing wrong.
This is what I have: 

Root is a MaDictionary, which have a serie of keypairs String, MagmaCollection
I have no more than 5 keypairs, and just one of the magma collections have more than 500 objects. 
Some of the internal objects have a tree form, always having magmacollections for the children, never more than 4 levels. 

The read strategy is 0

Any ideas?

Cheers, 
Esteban