This build has not crashed for me once! I've been multitasking and using google navigation several times this week, it's rock solid.
It's definately time to update the official CM10.2 build, since this 'amateur unofficial' is more stable.
The only bug I'm still experiencing is with the wifi: it stops working from time to time, dropping me to the mobile network data.
Toggling wifi on/off fixes it.
PS. to be clear: this also occurs for me on official CM10.2! The bug is only more apparent now, since my phone used to reboot at least twice daily on official cm10.2, inadvertently fixing the wifi problem