> > (1) does 6.4 offer speed improvements over 6.3.2?
Yes, though probably not as noticable as for the previous release.
> > (2) does 6.4 offer stability improvements over 6.3.2?
Yes.
> > (3) does 6.4 support query lengths > 8192, or data blocks > 8192
> > (other than large objects)?
Sometime in the past Darren K. worked to parameterize this limit. I
believe that this is in the code, but you will have to bump up the limit
and see if it works for you. The downside to having larger data blocks
is that the database size will be somewhat larger.
- Tom