[Zope] zope-2.2.5, zcatalog and random key error

[bak @ kedai]

hi
i've commited myself, and took the plunge.  i use zope-2.2.5 and zcatalog to
serve news articles.

articles are catalogaware, and catalog itself when added.  navigation,
presentation relies on zcatalog.  which is good and fast.
what's not good though is that i still get the random key error.  updating
the catalog clears everything up.  what caused this error?
this is bad, when users come to a page and is greeted with key error.  very
baad.
i'm not sure whether this is cleared in 2.3.x.  i think i saw this error
once at zope.org

what are your experiences?
my neck is on the chopping block now :(
i hope to try 2.3.x soon, but i'll need to test that out on a dev machine
first.

help..?
thanks