Logic Pro 9 Strange wave forms.

I wouldn't worry about it. It's likely got to do with what you are recording and the type of frequency response it puts out and how it interacts with the microphone. I've gotten this type of waveform when close micing a trumpet for example. (at least as close as I could, without blowing the capsule off the mic!)

Or, I can't tell for sure from your screen shot, if you are printing the effects from Amp Designer or Pedal Board, it could easily have to do with how the presets you are using handle phase. Either way I don't think it's anything to be concerned about. You could try removing the DC offset in the sample editor. I don't think this is the problem though.
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Thanks for the quick reply. This was just a guitar plugged directly into the soundcard and played through the softamp, so the signal was recorded dry.
Could it be from the particular pickup setting on the strat?
It doesnt sound strange when played back.
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I've never seen that kind of waveform specifically from recording a guitar track dry, but I suppose it could have something to do with the pickup.
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