"Yes, it is. I was sitting in my house and got 5 satellites on my N95."
I can't get any sat lock inside my house on my N95...
I all depends how solid your house is... and if it's got a shed load of metal techie things in the attic :-)
As someone else mentioned, the techie savvy way of nicking a laptop will become...
1) Grab laptop
2) Jump on tube train (bye bye GPS)
3) Remove battery
4) Head towards nearest "safe house"
5) Check laptop for GPS device
6) List on ebay
"Safe house" is defined as anywhere a GPS doesn't work, for example any tower block flat with a couple of floors above, or a nice old Victorian house with a basement. Just keep away from the windows - linux only then :o)
I hope the tracking service returns the altitude from the GPS too, otherwise a raid on every floor of Nelson Mandela House, Peckham is going to take quite a while!
Also given the cops track record for prosecuting anyone with a meaningful sentence that might actually deter them (aka not community service for a 27th offence), maybe a slight design fault in the laptop could accidentally release some kind of lethal gas... or maybe a thin film of explosive under the keyboard could actually remove the light fingers they are afflicted with!