02-26-2013 07:58 AM
Which version of OS you have Installed On your device ? If you're on OS 6 and It you're device is lagging or hangs a bit then you have to watch your applications to make sure that your device is not suffering from low memory ,when our device undergo low memory or if any application runs in the background .Sometime A battery pull restart is enough to resolve this issue, Have you tried a Battery Pull ?
Please press and hold the Menu for a few seconds, it will pop up a screen which will show all running programs in the background ,generally five will always there ( Home, BBM, Message,Phone , Browser ) look if any other apps. are running.
Also Check the File Free at Options > Status > Check File Free , In addition have you enabled Memory Cleaner on your device? Options > Security > Memory Cleaner, is it enabled ? If it is then disable it because It is also responsible for device freezing and clocking.
MOSTLY a battery pull is enough to resolve such issue , you can do it by removing the battery while your device is Powered On wait a min. then re-insert it back . reboooting in this manner fixes most issues within our device .
If that doesn't help then you can follow this Knowledge Base article :
KB10307 : The Hourglass or clock symbol spins continuously on the BlackBerry smartphone