Midi Timing error

[Gaba]

Hi!I work with a LE 6.7 on a XP Os. I'm experiencing troubles when recording midi. It happends ramdomly, but basicly on rithmic melodic phrases. The thing is that PT doesnt record exactly what I play. It changes the rythm of what I play.
I've checked the input quantize, and it is dissabled.

Any hint?

Thank you very much!!

[spkguitar]

Really need more information about your computer system to give you an informed answer, please. Processor? Motherboard/chip set? Hard drives? Memory? Vid Card? Sound card? What sound module are you triggering? Are you using a MIDI controller (which one)? etc etc