Okay did as you say and rechecked my xbmc.log upon startup and I still see a few errors.
Here's the output of my xbmc.log file, if you take a look closely, I'm getting numerous errors about NFS not being able to create directories along with various other errors which I can't figure out. I'm assuming all these errors are the reason why my xbmc menus are sluggish at times and it takes awhile for me to quit out the app on my macbook, appletv, etc.
00:45:06 T:2899032616 ERROR: Unable to load libcrystalhd.dylib, reason: dlopen(libcrystalhd.dylib, 1): image not found
00:45:10 T:2961379328 ERROR: NFS: Failed to create(//) mkdir call failed with "NFS: MKDIR of // failed with NFS3ERR_PERM(-1)"
00:45:10 T:2961379328 ERROR: Create - Error creating /Users/kwon/Library/Application Support/XBMC/userdata/Thumbnails/
00:45:10 T:2961379328 ERROR: Create - Error creating special://masterprofile/Thumbnails/
00:45:10 T:2961379328 WARNING: FileNFS::OpenForWrite() called with overwriting enabled! - //6/6ebf1b4d.tbn
00:45:10 T:2899032616 ERROR: Window Translator: Can't find window tvsettings
00:45:10 T:2899032616 ERROR: Error evaluating boolean expression Container.Content(addons) | [SubString(Container.FolderPath,plugin://) + !Container.HasFiles + ![Container.Content(movies) | Container.Content(tvshows) | Container.Content(seasons) | Container.Content(episodes)]
00:45:10 T:2899032616 ERROR: unmatched parentheses in Container.HasFiles)
00:45:17 T:2961379328 ERROR: InputStream: dvd streams not supported for thumb extraction, file: nfs://192.168.1.21/volume1/Movies/Airport (1977)/Airport (1977).ISO
http://pastebin.com/RsCWKCKp
and here's an updated output of my /volume1/thumbnails/0/ directory:
Kona> ls -la
drwxrwsrwx 3 501 users 4096 Jul 28 03:56 .
drwxrwxrwx 22 501 root 4096 Jul 19 02:54 ..
-rw-r--r-- 1 501 users 314062 Jul 21 00:11 00154d0b.tbn
-rw-r--r-- 1 501 users 82546 Jul 19 02:11 0019db38.jpg
-rwxrwxrwx 1 501 users 257759 May 31 09:18 0047bf88.jpg
-rw-r--r-- 1 501 users 189590 Jul 21 00:08 00521990.tbn
-rw-r--r-- 1 501 users 12584 Jul 18 20:31 006dc62b.png
-rw-r--r-- 1 501 users 88502 Jul 24 23:44 00795f32.jpg
-rwxrwxrwx 1 501 users 65203 May 31 09:18 01090840.jpg
-rwxrwxrwx 1 501 users 241788 May 31 09:18 01204442.jpg
-rw-r--r-- 1 501 users 115452 Jul 28 03:56 012d0c93.jpg
-rwxrwxrwx 1 501 users 276320 May 31 09:18 0146aaba.jpg
-rwxrwxrwx 1 501 users 607777 May 31 09:18 0157e934.jpg
I noticed that some files have rwxrwxrwx while others have rw-r-r only, is it suppose to be like this?