Jim,
Are you sure you added the revdns and identlookups off options to the <Global> section
of your config? As where they are (default, I left them there also to no ill effect,
also that's where the gui edits them so best leaving that alone I guess) will have
little or no effect?
I found it was purely the ident lookups not being in global that caused slow logins but
have the revdns off in that section also for completeness.
Let us know whether this works, a better solution to hand editing a config which the BQ
gui may change.
Brett