[support] Drupal 7 and postgres opinions

[Don]

Hi,
I'm looking at bringing up a new multi-site under postgres for a set of 
D7 sites. I'm wondering if people have opinions on whether there are 
performance gains in using postgres and any other feedback about 
performance and ease of use with the new abstract interface.  These 
sites will have ubercart, but are primarily brochure sites with multiple 
authors.

 From what i've seen, until the site is thoroughly cached D7 runs a bit 
slow under mysql. I'm also hearing stories of the database getting 
corrupted, though i think that's probably from not having enough memory 
set in php.ini.

Thanks.
-Don-