This is going to sound odd, but has anybody experienced what I can only best describe as static electricity while charging their X? If I run my fingers along the stainless steel it creates an almost buzzing sensation. If I unplug the phone, it goes away. I've never experienced this before. It doesn't hurt...it's kind of neat, but it also seems like it might be a problem of some sort... either with the phone or possibly the charging cable? Thoughts?