Like many of you, I have been pretty reluctant to use my iPhone or iPad to play music since this issue was uncovered. All my listening has been restricted to iTunes and my iPod Classic, which makes it a little annoying when I am commuting (USB cable as opposed to Bluetooth in the car and carrying both devices when I'm on public transport or walking) but at least I know that my iPod Classic WORKS.
I almost always have to plan what music I listen to if I am going to use my iPhone. For instance, last night, I stepped out to get some take-away and listened to four tracks from Elastica's debut album. I took a screenshot of their play counts before leaving and after syncing, they appeared okay, but seriously, you can't be doing that **** when you listen to seven or eight hours of music a day before syncing.
For those of you who don't have Doug's script which allows you to manage your play counts, get onto it, as it does allow you to make changes to play counts if they screw up with the least hassle, and removing the need to start/skip to the end if you need to.
The bigger picture here is what the **** the developers are doing to create such a drastic problem, and how they can avoid it in the future (this isn't the first time play counts have been tampered with on an iOS update).