E7 - screen unresponsive when charging

The touchscreen on my E7 becomes unresponsive while charging. Essentially it seems to be losing it's accuracy. It stilll works somewhat but you have to tap all over the screen to get a response, and then it's not the one you want.
I noticed the same on a friend's C7. Anyone else noticed the same.
Nokia:
Any help (though no one from Nokia will ever reply anyway...)
P!
My Nokia history:
2110 => 6110 => 8110 => 6310 => 2300 => 2600 => 6070 => E71 => N97 Mini => E72 => C7 => E7 => E6 => 700
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Does this occur when connected to a mains charger, a computer or both ? I tend to get a little slowing down (not innaccuracy) when connected to computer via usb, but no change when connected to mains, can only assume there is some processing going on whilst connected to computer ! It's not somethying I've noticed before, just tried it after reading your post, so I obviously don't see it as a major issue, and this is the first post I've seen on theis subject !
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E7 - screen unresponsive when charging

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