why i cannt only update pidgin through yum

[Ken YANG]

i found i can not update pidgin to 2.1 through yum,
but there are not "pidgin exclude" in my yum conf file:

exclude=kernel* python-virtinst* xen* xorg-x11-drv-nv
xorg-x11-drv-nouveau libraw1394

my current pidgin is:

pidgin-2.0.0-0.34.beta7devel.fc7.i386


i'm in f8 rawhide, and my laptop is in same condition,
but that pidgin had updated to 2.1.

can anyone give me some hints?