I recently "upgraded" my iphone to ios04.2.1....using the released golden master (which apple is due to release anyday). I think this may be causing the problems for me. Has anyone else changed there iphone's operating system to either 4.2 or 4.2.1 and having problems?
[Please note that the application v4.2 upgrade and Apple's Ios4.2 are simialr names hear which two different meanings....so there is no confusion]
hope it works out for you.. I stopped and grabbed a cache on my way to work this morning.. the app was very responsive and got me within three feet of the cache..
P.S. You should probably go over to the feedback site to post this.. that way GS can be made aware of it.. as they state above, this thread is not really for posting bug reports other then the features that were addressed in this release.