I’ve been using various versions of the iPrint 4.x client on several of my networks, and always seem to get annoying delays when doing a File – Print. The job prints fine, it just takes a while for the OK box to appear (up to two minutes in extreme cases). Of course some users think the job failed or was never submitted, which results in help desk calls and people repeatedly clicking the print button.
TID 3611869 states that the iPrint client 4.30 fixes this issue. The cause appears to be the way IPP: attempts to resolve on the network. I’ll deploy the new client to a test group of users next week, and I’ll report back if any differences, good or bad, are noticed.