No wave form showing in regions

I recently have the problem that when I record my guitar signal thru my audio interface (tc near or Guitar Rig 3) the wave form of the recording doesn't show in the region.
When I open the sample editor I can see the waveform.
As soon as i change the level of the signal in the sample editor (make it higher OR lower) boom, the wave form shows in the region. Does anybody have a clue?

Thanx for the replay!
to set the recording delay to 0 did the trick, even though I have no idea how it ended up on a value of 677!!
I've set it previously to the proper value which I figured out learning from the fantastic videos by MacProVideo.com.
The proper procedure is shown in video Nr. 18 from "Logic's Latency toolbox".
You can find the particular video also on youtube: http://www.youtube.com/watch?v=gQUngLB5mWg
I can really recommend the Logic series from MacProVideo.com
melodea

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chart2.JPG ‏9 KB

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No wave form showing in regions

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