Please help! 300 tdi engine problem

Could anyone please help it seems to start off when the oil and filter was changed on my Discovery. When the engine is started and left to tick over, it is ok but when you put some rev's on it puts out blue/white smoke but if you take it for a drive down the road and back it is ok -does not put smoke out.

If anyone has had his problem or knows what it is causing it to put the smoke out and knows what needs to be done to fix it, your input would be greatly appreciared.

thanks for your time

CHesk this out, it gives a basic discreption as to what colour smoke can mean

http://autorepair.about.com/cs/troubleshooting/a/bl303a_3.htm

is there to much oil in her

The oil level is ok it is in between the two marks

try taking the air filter element out and see if that mahes a difference

If the problem started when the oil and filter was changed, do you know what oil was put in?