Chris,
I can give you details on my problems...
OS 10.2.6, Logic 6.3.1. Dual 1.42 G4, 1.5 gig RAM. I have two setups which are identical, except for the MIDI and audio interfaces. Setup 1 uses a Tascam US224 for audio and MIDI (my home setup). At the studio I use a Hammerfall 9652 and MOTU MIDI Express XT USB.
For me, what happens is that when the legato tool gets stuck, it will only play the legato sample - or the ending note of the legato interval. Even if I begin a phrase with a note, you can hear the legato movement from whichever note I last played. I have to reset the legato tool for it to return to normal behavior.
I hope I explained this well.
[*-)]
Fred Story
Concentrix Music and Sound Design
www.concentrixmusic.com