Something like that happens to me. Not because of the cold, but sometimes when I plug my iPhone in it won't recognize it and I have to unplug it and plug it back in. I think its when I plug it in and quickly get into the AUX menu it freezes.
BTW, the iPhone or iPod feel so good when you touch them after they have been cooled by the A/C in the center console.

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2011 ///X5 M (On Order)

2009 X5 4.8 M Sport Space Gray/Black Fully Loaded

2007 GMC Yukon XL Denali Loaded and Customised