My GPSMAP 60CSx had started to become unreliable: crashing after startup, randomly locking up in mid route, and just generally being an aggravating piece of kit. I was really close to replacing it.
The problem seemed to appear after I’d used USB Mass Storage to transfer archived track logs to the computer. As a last resort, I tried removing the hidden files that OS X creates on every removable disk, and now all is well. It’s annoying and inexcusable that Apple chooses to do this, but we work around.
To delete these files from the terminal and eject the device safely, enter these commands:
pushd /Volumes/GARMIN/ rm -rf .Spotlight-V100 .Trashes ._.Trashes .fseventsd popd disktool -e disk1
Your device might not be called /Volumes/GARMIN/, so check and change appropriately. If you have multiple drives on your machine, your GPS is probably not the disk1 device. You can find out which it is by entering disktool -l.
(oh, and I took the screen capture with CaptureIt). Save options, then exit back to the home screen.
Exit maps, and start your camera. You’ll know if you have a location for tagging if there’s an icon that looks a bit like 
in the bottom right corner of the screen. With no fix, it’s a red crossed-through icon. Now take your picture!
According to Preview, I and my bike (and my Blackberry) were close to Charyn in Kazakhstan. I’m quick on my pedals, but not good enough to get far east in an afternoon.
Curiously, I couldn’t find anything built into Windows (okay, XP) that would read the tag location. I guess Microsoft just don’t want you to know where you are now, merely where do you want to go today.
