Pi Reboots viewing media info - files stored on ReadyNAS NV

Hi all,
I have a very strange issue that I've been trying to resolve for a few weeks now and I'm running out of ideas.

Background:
I recently built a Raspberry Pi using the latest build of RASPBMC. I'm storing all of my media files on my ReadyNAS NV (Firmware v4.1.10) in a share named "Media" with sub folders for "Movies", "TV", "Music"... The share has Read/Write permissions (which I plan to limit to Read-Only later). I am using thetvdb.com to scrape data for my television files and themoviedb.org as my scraper for movies. I've done this successfully via XBMC (which I believe stores everything in the library database) as well as via Sickbeard which pulls over the supporting files and stores them along-side the media files. So GETTING the .nfo and fan art files is not the problem. I originally created the ReadyNAS media source in XBMC using SMB (CIFS on the NAS) but changed it to NFS. This did not resolve my issue.

The Problem:
Everything works fine for the most part. I can use XBMC (RASPBMC) to watch my media and it displays the fan art, posters, menus etc as it should.
The problem comes when I view and then close the .nfo episode information for TV and the Movie information for movies. XBMC will pop-up the synopsis and artwork etc. But when I close the pop-up my Raspberry Pi reboots more often than not. I can sometimes view and close the info with no issue but not usually more than 2 or 3 times at most before it reboots.

Since the Pi is the new element it was the obvious culprit. But after weeks of eliminating every possible hardware and configuration factor I could think of (and asking for help on the RASPBMC forums) I finally decided to copy some of the same media files to a USB hard drive hanging off of my Windows 7 machine. I connected the Pi to that media source via SMB and voila... no reboot issues. None! So it seems that the problem is the ReadyNAS.

More info:
- The ReadyNAS NV is old (originally purchased as Infrant) but it is running the most current firmware version
- Aside from being kinda slow, I have no other issues using it for backups etc and copying files to it
- I am connecting the Pi to my network via WiFi but I did try a wired connection to my network and had the same issue
- My ReadyNAS has the original 4x 250GB Maxtor drives, though I am planning to upgrade to 4x 2TB WD Red drives. I don't know how that would solve my issue but if I can't get this resolved then I probably shouldn't waste the money.
- The problem happens for both movies and television media files.
- I have done a clean build on the Pi twice... and like I said if I take the NAS out of the equation the problem goes away
- I have looked at the debug files for the Pi when this happens and all I see is the last actions to view the media info, followed by the normal boot commands after the reboot.
- I have looked at the ReadyNAS log files and I can not find anything suspicious - though I'm not 100% sure where to look specifically. I did find an alert for the configuration IP associated with the HTTPS protocol/certificate but I corrected that and the issue persists. And XBMC should not even be using HTTPS for anything anyway as far as I know.


I'm not sure what to try next. Out of curiosity I'm planning to install an Android version of XBMC on my tablet and see if I have the same problem... and I may also try it from a Win7 machine, though it's not really apples to apples and either way will not tell me how to solve the Pi problem.

I would love to hear any thoughts about how I might solve this without having to buy or build a new NAS solution.