QUOTE(rosfrog @ Feb 5 2007, 10:31 AM)

This is most likely to be due to tension in the way you are handling the bow - at this early stage, it's unlikely to be coming from your bow or fiddle - it will be due to your bow hold and the fact that you are probably (like I was at g2) gingerly moving the bow from end to end whilst trying to keep a perfect angle, make good changes and do all the other things your teacher wants you to do. It will get better with practise. Make sure that your shoulder doesn't lift when you play and that your hand and arm are relaxed, that the wrist remains loose and relaxed without being floppy.
At the beginning you should try to avoid tilting the bow to correct this problem, as it's kind of avoiding the issue. It is perfectly possible to play with the bow hair totally flat and not have the bow bounce, you should practise until you can do this. Then you can use a tilt in the bow for certain effects.
That's my take on it, but we have a couple of teachers on here and at least one pro, I'm sure they'll have much better advice!
Good luck, keep practising, honestly it will go away before you know it - just don't take any shortcuts.
Allan
Thanks for all the tips folks.
I love your signature Allan! My clarinet discovered Guinness when I was touring Ireland with the Edinburgh University Chamber Orchestra in the late eighties and I reckon it developed a mind of it's own after that (not to mention changing it's name to Hamish). The Guinness fairly improved its tone!