http://kb.netgear.com/app/answers/detail/a_id/13321/session/L2F2LzEvc2lkL1JmUmlpRCpq
I don't think anyone has mentioned this. I only updated mine to the .22 one recently. I can't say I've seen that problem it's supposed to fix, so I'm not going to bother.
I had to set up a CCTV system the other day with a Netgear DG834 router supplied to the customer by Idnet and ran into all sort of problems and seemingly the N version has a problem with port forwarding which may also apply to other models. The DVR support people had over a dozen problems this week alone. :dunno:
I've not had problems with port forwarding, but that being said I'm in the DMZ on this PC, but my mums PC seems to run fine. I haven't needed to set up any forwarding for a long time so I'm not sure :)