Z30STA100-5/10.2.1.3175 is anyone experiencing issues where it says a screen shot was taken but when they check their pictures it's not there, other times a lengthy delay.
It was an issue on leaks a while ago when BlackBerry was messing around with the file system structure. That was the fix. I can't guarantee it will fix it but it's certainly worth a try.
I had this happen the other day but it was with camera pictures. I rebooted the phone and after 5 or 10 minutes they started showing up.
I have this problem with both camera shots as well as screenshots. Rebooting seems to keep it at bay for a while. But after a few days, you may need to do it again.