Just reading through this thread , I have just had the same thing happen to me.
go 5000 , updated and a few days later noticed I have no live services.
GPRS disconnected. Live services show as activated.
In the About section it shows gprs status. Underneath it says disconnected
Then it shows a set of numbers. this varies between 2 different sets
(23430,0,0,0,10,0) or ((null),0,0,0,10,1)
Spoke to customer service and they think the sim card is faulty. the unit is 3 yrs and 1 month old so they want a minimum £85 or $110 to replace the sim card.
Its been a great sat nav , but, I think I paid £229 or $300 for this even though I could use google maps on my phone for free. I paid that really just for the live traffic. So to get 3 years live traffic for that cost I don't think I will be replacing it.
Life time traffic , even by Tom tom standards should be more than 3 years.
Makes me wonder if more companies do the Apple thing of harming a product during updates to ensure repeat sales.
This all happened after an update to my tom tom.
For anyone with a unit out of the repair warranty I would think twice about downloading any updates that are not critical for its use.