Weird glitch with metronome

Morning All,
 
I'm back in the Sound Engineer's seat after a long lay-off mainly involving wallpapering and making homebrew cider.
I started to lay down some guide tracks for 4 new songs I'm working on so, as one would expect, I found a good tempo, turned the metronome on and strummed the songs down.
 
Although I normally like to get a few more instruments recorded next, my singer was in town so she came and put some vocals on the guide tracks.
So far so good until I tried to put some drums on...
 
It seems that the metronome is not synched correctly with the project tempo! The speed is OK but there is a lag of around ¼ beat throughout. I've checked everything I have - I'm not using any MIDI (yet) so I know there's no issue with latency. The drums (Addictive) are spot on so I know I'm writing drum parts on the correct measures - it's the lag of the metronome that has caused all of the recorded audio clips to be off-set.
 
The solution, of course, was to drag all of the recorded audio clips slightly to the left so that they fall in time with the start of measures etc and then stop using the metronome. For my next recordings, I'll just make a simple click-track with the drums and not even bother turning the metronome on at all. Not a BIG hardship I'll grant you but I was wondering whether anyone else has experience with the metronome behaving so oddly?!
 
Thanks,
 
Frink.

I ran the metronome against a separate click track and didn't notice any difference or problems. All I can recommend is validating your audio settings in Sonar preferences as well as any separate control panel for the audio interface. Not sure if it would help but there was an "e" update to x3.
 
Edited to add it might also be worth checking both the audio and midi metronome options to see if there is a difference.