Maybe you are right, writes in LDAP are more slow than reads so could be a performance problem, all depends on your POP3/IMAP access. But maybe could be a alternative patch if you think your LDAP server can support it. The extra info could be very interesting in order to disable unused accounts.
It was only a hint from me to you. If you have ten POP3/IMAP Requests per minute there is no problem. If there are one thousand that will be a problem.
Put a flag in the makefile and everyone who need it can use it.
Andre
