Did you try turning off Fast Boot? That fixed this issue for me (so far, at least).
Dave
Yes, I unchecked Fast Boot and still have the problem.
I've gone through every setting and app sort of as a Spring Cleaning after this update to see if I could do or remove anything that might affect it. I've actually learned through this how to clear up space in the memory (app storage space) that was always around the "low space" warning affecting everything else (Mng.Applic. - go through each and clear data from stuff that builds up you didn't even know built up). Still, the same problem. Free RAM memory is lower than what it was prior to GB (now around 55-60, before 70-100 ), but even that was an acceptable level once upon a Froyo.
I'm kicking myself for not rooting sooner because I'm about to lose some apps I cannot find anymore (Market or AppBrain). I've only discovered this after going through every single app I have (about 300) in this process of checking and cleaning out and finding phone memory space.
Also, my homescreens are well customized, so it will be very time consuming to set back up.
I did have a GPS bobble with it such that the settings screen doesn't want to exit when automatically opening for an app like Navigator after doing a voice command. Also, the GPS on/off settings from various sources are buggy including the basic menu/setting way of doing it, but I've managed through "luck" go get it to turn on and off although after repeated tries. I use it for navigation all the time and am about to take a major trip where it will be key.
I too have a problem with Google's My Tracks app not sensing the GPS even though it is definitely on, but I know others have had this and that it is an app issue - not OS - although frustrating as it is Google's.
I think, after a lot of forum searching, that I've figured out that a factory reset should be enough - not hard reset requiring possible programming from Sprint.
Still, I'm trying to find ways to recover apps no longer on the market - probably my biggest issue right now. Some have been renamed/re-issued, but still some others are not to be found...