iPhone5 users ... OS 6.1.3

[gregzz4]

I bought my new iPhone5 last Saturday. It came with OS 6.02 or so
I see 6.1.3 is out, but have read of some problems with it, such as decreased battery life, wi-fi connection issues, e-mail issues, phone calling issues ....

I'm happy with how mine is working for now, so I'll probably just leave it be until I see something worth upgrading for, but ...

Anyone have any bad experiences with this new version ?