beta 4 update failure and icon became yellow

hi..........i used the beta 4 av for two days it was fine bit today suddenly it popped a message....update error and the icon in system tray became yellow and xp security centre warned that nod was un-updated and turned off......now i was using my nod 32 v3 login which is valid till 18/6/2009 and the beta license verification states the license is valid till june........but v4 refuses to update ...........now i am back to v3.0.684.0.........
1.is this a bug ?
2.should i go back to the beta v4 for i like it ?
thanks

 

Beta 4 uses different update servers than version 3. Leave the username/password that comes with the beta. Use beta license user Name : updv4 , password : upd4test

 

but that's just valid till feb...2009 ? will i be able to use my login then or get another...beta key ?

 

Don't worry. If there is another beta, it will come with its own expiration date.
You will use your personal username/password once the program leaves the beta state.

 

thanks.........going back to v4........