i just plugged my iphone in, and it started doing a backup, which took around 10-15 minutes. i've only had the phone since thursday, but had never had it take this long. normally it takes around 1 minute if that. after it finished, i hit the synch button again, and this time i didnt see the backup dialog, and the synch took place like normal, under 1 minute. is this common? does itunes only backup the phone every so often? thanks