Apologies in advance as I am really only a wannabe geek but love this forum - have learnt so much.

Just about to give up on Xbox (gift from my brother) so hoping someone can help as I love love Netflix and so does the rest of the family.

I am having issues getting logged out of Xbox live about 20 seconds into watching Netflix on Xbox360.

Prior to this I have been watching Netflix on xbox with no problems for the last month.

I can watch Nextflix via the tablet with no issues

I am current using ethernet cable to Dynalink RTA1025W Modem and with Flip

Using Unotelly, and US profile.

I have tried a few things I found on Google:

Deleted all profiles
Cleared cache 3 times
Reloaded profile
Turned off modem for 30 secs

Tried using both the US app and the App installed via the US profile.
Tired accessing using the NZ profiles

I have had many issues getting a full connection to Xbox live when I test the connection under settings - with a Nat issue coming up a few times. Now I have a full good connection when I test but the problem persists. I understand that by testing the connection it automatically checks for updates.

I have found an xbox thread that discusses issues with Xbox live logging out with a Flip connection and that it might be related to the Nat (actually dont understand what this is) however Flip via Geekzone has said there should be no issues.

http://forums.xbox.com/xbox_forums/xbox_support/xbox_360_support/f/9/p/736503/2921237.aspx

Just not sure if I need to:
Update my old modem
Change internet providers (looking at Slingshot naked BB 80G if I can get my head around a voip phone set up)
Purchasing Amazon Fire TV (we dont actually play Xbox games much)
Something else...