key set delete query

I notice to my dismay that key set query optimization only works for
SELECT :( This could be a significant performance problem for my
application, which would like to do a key set based delete.

Any thoughts on the advisability of changing the criteria for
transformation of key set based queries?

I know that cnfify is being reworked for release 7; any comment on when
7 will be available?

How stable is the latest beta? About 10 days ago I tried building from the
daily snapshot, but didn't get very far.

Thanks for any comments!

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Michael McCarthy                             TCSI Corporation
michael@tcsi.com                             1080 Marina Village Parkway
(510) 749-8739                               Alameda, CA 94501