Description of problem:
The first time it happened when I rebooted and logged into KDE
The second time I performed a yum update from the command line which triggered this error

Version-Release number of selected component:
PackageKit-0.8.9-1.fc18

Additional info:
reporter:       libreport-2.1.4
backtrace_rating: 4
cmdline:        /usr/libexec/packagekitd
crash_function: g_str_hash
executable:     /usr/libexec/packagekitd
kernel:         3.9.4-200.fc18.x86_64
runlevel:       N 5
uid:            0

Truncated backtrace:
Thread no. 1 (8 frames)
 #0 g_str_hash at ghash.c:1730
 #1 g_hash_table_lookup_node at ghash.c:401
 #2 g_hash_table_lookup at ghash.c:1074
 #3 zif_package_array_filter_duplicates at zif-package-array.c:419
 #4 zif_package_array_filter_newest at zif-package-array.c:310
 #5 pk_backend_get_updates_thread at pk-backend-zif.c:3202
 #6 pk_backend_job_thread_setup at pk-backend-job.c:785
 #7 g_thread_proxy at gthread.c:797