More than a few of you have had some issues with the latest version of Google Maps for mobile, either with the My Location feature or apparently with the layers. Accordingly, Google has updated the app to version 3.3.1. No word yet if it's fixed any of the triangulation issues you guys were having, but crashes should be squashed.
Go get the new version here, and sound off in the comments if you're still seeing problems, and be sure to let 'em know on the official Google forum post. (For what it's worth, it very quickly got me within 1,000 meters in Orlando.)