I'm not sure where people got the idea that being disarmed was a long-term thing. Frankly, one of the reasons why it's not a great tactic in the game is because it's just as easy to undo as it is to do. It's a good way for getting the McGuffin out of the villain's hands, or making the victim spend a round or two scrambling, but that's really about it.
Depends on circumstances, of course. My 3.5 bard pulled this off once:
Round 1: close to 40', blind an enemy with glitterdust
Round 2: close to 15' while drawing whip, disarm enemy, who spends the rest of the fight groping around on his hands and knees searching for his weapon
The psywar's player turned to me right after I won the disarm opposed roll and said, "That was the coolest thing I have ever seen a bard do." Then I started humming the Raiders of the Lost Ark theme song.
