I tried 1.33NA with with clean install (uninstall old version and install new version) of SharePort 1.10 R....and found that shareport version not working with my WD external Elements HD formatted fat 32.
I did hard reset on the router before & after firmware upgrade and entered my config manually and rebooted. Router seemed fine, just shareport was wonky.
It would see the drive, but hang computer when I selected avi files on drive to play.
I would notice shareport would disconnect from the HD, every time I selected a file. I checked Win 7 64 firewall, made appropriate public/private changes to no avail.
In order to use shareport I had to downgrade (go back) to 655 (A4) firmware 1.21 and do clean install of shareport version 0.93, and all is good. By the way I use Avast 5 AV on my computers with no access problems to my USB devices (HD's or printers on powered hub) with this firmware/shareport version.
Just to be sure that it was not operator error, I did firmware/shareport upgrade twice within a week and got the same results...and yes I installed the 64 bit version of Shareport.
I did notice the 1.33NA firmware was a bit snappier in its web face configuration pages, but no noticeable faster internet web page loading or speed increases. I did not check wireless connections or Router stability, as the shareport issue killed further testing for me.
If anyone has a clue as to resolving this problem, I would like to hear........