timing issue on playback

I had a vocal session in the studio last night.  I used X2 and noticed that each time I did a take and then played it back the newly recorded take was playing slightly late.  So I had to manually drag the new clip to the left before listening back.

Anyone else seeing this behaviour?  I think its a bug.

Sonar automaticaly adjusts for offset, it is very rare that one has to change this. You should have your system specs in your signature. Are you using a audio interface?
Are you recording dry or passing through a efx's buss?