There are massive bootloop issues with CM10.2 nightlies after about 09/20 (also with maps usage while multitasking since 09/09).
To resolve, folks have reported the following helping:
1. NOT wiping cache/dalvik after flashing latest nightly
2. Not using manual reboots (this seems to encourage bootlooping)
3. Manually powering off the phone after flashing a nightly and then manually powering it on
It's affecting CM10.2 stock and all forks-- quite a bit of discussion about it over at XDA. Probably either related to the new kernel or something that's changed from CM commits.
There's also a mobile data drop/recycle bug where the connection will time out and then recycle itself. That doesn't seem to affect everyone, and I've noticed it to be more frequent with the T-Mobile LTE IPv4 APN than the epc.tmobile or LTE IPv6 APNs.