Who to believe (Histograms or red "show clipping"-warnings)

Ok, this isn't something thats all new to LR4, I've also had this problem in LR3, but it's still there and I like this forum so hope it's OK?
So here's the thing,
I usually shoot tethered to a computer not equipped with the best monitor in the industry, and from there I also export my raw-images and send them as TIFs to the retoucher. But I want to be able to know that there is information in critical parts of the image (i.e. blown highlights). To do that I look at the histogram and toggle the "show clipping" option and here's when the problem becomes visible.
the histogram shows only crushed blacks but no clipped highlights, but the "show clipping" makes a lot of red dots.
Why is it like this -  and should I turst the histogram or the "show clipping"?
(The soft proofing is of course the best way to go to see what will be true values in the adobeRGB-file, but I'm not really familiar with that yet so I don't know if that will fix my problem as well?)

If you zoom in to 1:1, do you still see the "red dots"?
It might be that the clipping overlay is generated from the downscaled copy and might be not 100% accurate.
P.S. This should have been posted here http://forums.adobe.com/community/lightroom?view=discussions, perhaps.

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