[Zope] zmi issues

[Yuri]

Hi!

 I'm doing an import of a large .zexp (from ZMI), and I see thay Zope is 
first loading it all in memory, than doing the work of importing it! I 
mean, isn't it a little bit *inefficient? :)

 Also, renaming a folder with a lot of zclasses in (40.000), takes a lot 
of time. After 10 minutes, it was still there... and this is a 2,4 Ghz 
P4 and 512 MB of Ram...

 Can this be fixed/improved? :)

 TIA!
*