So the last two nites, I have noticed that when plugging the Lumia 920 in via USB rather than the included charger, I don't get a full charge overnight. The 900 used to be able to do that. What has changed or am I the only one having this issue. Granted once the charging plate finally arrives this might not be as big an issue but when traveling, there have been times I forgot my wall wart and had to use USB.