It would be a good idea for someone to run the nvidia bug reporting shell script that's included in the Linux driver package against an affected system and submit the bug report to them - don't ever assume someone else has reported the issue and it's known/being worked on. Once you get a support ticket, share here or PM to me and I can run enquiries with their driver team.
Well here's the problem, I just did that. Ran it twice.
First time right 5 seconds before I hit the "suspend" button.
Second time right after I reset the device (because it crashed), right after it booted.
I compared the files, and nothing differs except timestamps from what I can see.
You can find the nVidia log here:
nVidia debug log - Pastebin.com
Enabling debug logging from LE itself only says this:
22:40:30.556 T:140663002720000 DEBUG: CAnnouncementManager - Announcement: OnSleep from xbmc
22:40:30.557 T:140663002724480 NOTICE: OnSleep: Running sleep jobs
22:40:30.557 T:140663002720000 DEBUG: GOT ANNOUNCEMENT, type: 8, from xbmc, message OnSleep
22:40:30.557 T:140663002724480 NOTICE: OnSleep: Stopping lirc
22:40:30.557 T:140663002724480 INFO: LIRC SetEnabled: disabled
22:40:30.557 T:140663002724480 DEBUG: CApplication::CloseNetworkShares: Closing all network shares
22:40:30.557 T:140663002724480 DEBUG: LogindUPowerSyscall - delay lock released
22:40:30.655 T:140663002724480 INFO: LIRC SetEnabled: disabled