05-14-2010
Sounds like a bug. The clock applet may have missed the SIGCHLD signal somehow, so isn't aware the process it spawned has finished and waits forever. Or it's just frozen entirely.
Running that applet with strace so it saves a file of what system calls it runs may help track down what it's freezing on or what have you, but if it really takes hours to manifest itself that file could get enormous very quickly.
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LEARN ABOUT CENTOS
system-config-printer-applet
SYSTEM-CONFIG-PRIN(1) Man pages SYSTEM-CONFIG-PRIN(1)
NAME
system-config-printer-applet - print job manager
SYNOPSIS
system-config-printer-applet [--help] [--version] [--debug]
DESCRIPTION
system-config-printer-applet is a print job manager for CUPS. Normally it will display a printer icon in the notification area, greyed out
when there are no print jobs for the current user. Clicking on the icon displays a simple print job manager for cancelling or reprinting
jobs.
To save memory, the applet waits first of all until the user has printed a job before putting the icon in the notification area. To invoke
the print job manager before a job has been printed, run the applet with the --no-tray-icon option: a desktop file is provided for this, so
that it should appear in the system menu.
As well as displaying a printer icon in the notification area, the applet also provides a D-BUS server for the
com.redhat.PrintDriverSelection interface, to help configure a new printer when it is plugged in.
OPTIONS
--help
Display a short usage message.
--version
Display the version of the applet.
--debug
Show debugging information.
AUTHOR
Tim Waugh <twaugh@redhat.com>
Author.
system-config-printer 24 Nov 2010 SYSTEM-CONFIG-PRIN(1)