I have a Pismo 400 and recently I realized that there is now an IrDA icon in the Internet Connect application. I used to use IrDA occasionally back in OS 9 (for internet access via my cell phone when I was in the middle of nowhere, but it was painfully slow at 9600 baud) but I had figured that IrDA support was gone in OS X.
Did Apple bring it back with 10.3? Or with an update? I just noticed it, but since the Pismo is not my primary machine it could have been there for a long time and I wouldn't have seen it.