Yeah, generally speaking the "other way" for LDAP queries is better then the default way. The default way will send multiple queries and get retarded with timeouts. The other way (just the port number change in CUPS right?) will be much better. In my installations these days I configure that immediately to alleviate as many hassles as possible.
I know what you're saying with the bugs. We have one customer that is not happy. Documentation from data sheets, marketing, SRND and so for say CAD integration with CUPS works. Well, with 8 it won't until an ES is released first quarter of next year.
Did you do the install or did you pay a partner?
My '03 Sold.