Its true for locks with activated AGPS. I get a lock in about 2 seconds at a new location (serveral 100km away from the last), Used to be about 15 before.
But lock without AGPS is still dead slow. I was in a position where I only had UMTS via Data-Roaming (=expensive) so I disabled AGPS. I had to wait about 15 minutes for a lock despite the device showing 10 recognized satellites after 2 minutes