PS3 Media server seems to disconnect after idling for long

[banana]

Computer Specs:
Win7 Professional 64-bit
8 GB Ram
AMD A8-3850 APU (2.90GHz)
Movies are located on an internal hard-drive. Hard disks are set to "turn off after 60 minutes" (although they should probably be in use if a movie is streaming and if a connection with PMS is maintained, right?)

PMS verison: 1.72.0 (d9fd0a44c)

Device/renderer: iPad Mini
.conf: http://pastebin.ca/2311038
Connected via WiFi.
Generally no transcoding - usually play .avi files which are set to norender (although mEncoder is the only renderer that is enabled).

Detailed information:
When I watch movies (or a few episodes, say three 40 minute episodes), by the end it seems as my renderer is no longer connected to PS3 media server as I become unable to browse files or use the 'Shutdown computer...' plugin.

Debug.log: Pending reproduction. (I have to watch another really long movie first... which I'll try and do now)

[banana]

Debug.log finally ready, let me know if I need to enable full logging.

http://pastebin.com/8mbW1aVp

[meskibob]

It looks like the error in the debug.log should be fixed in the latest snapshot. If you're willing to test, you can confirm by trying the snapshot - viewtopic.php?f=14&t=14753

[banana]

Hi, I tried updating to 1.80.0, but the same thing happened*. I'll try and reproduce it again over the weekend.

* Strangely enough, when PS3 media server disappeared, PLEX media server appeared -- but I uninstalled PLEX a long time ago.