simple mode dangerous / compass goes wild?

Ok I think I found out why I crashed 3 days ago. It alsmost happened today again. I was flying in simple at alt-hold and all was fine. Then after 3-5 minutes all of the sudden the copter start to react verry strangely to my inputs and was no longer controlable. Throttle keeps functioning do so i just landed quickly. After that i disengaged simple mode and it didn't happen again. So could it be that somehow the compass just goes all crazy for a minute all of the sudden thus cuasing the copter to go all over the place when trying to steer in simple mode? I have atached the log but i am not sure if compass is seen in these.

2011-11-26 09-04 2.log

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  • Ok update. I now know what happens but I am not sure why. When you first fly simple mode all is well. Then sometimes when you switch between modes and back to simple mode all of the sudden the compass is off and when je pull the stick back it goes to the right instead of coming to you. When you then land and rearm the problem is gone in simple mode compass is ok again. So sometimes when switching between modes it cause simple mode compass setting to go al strange. Any ideas on how this is happening. I only have this with 2.0.50 and up. With 2.0.049 i do not have this issue. PLS advice.

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