Waiting for Transaction Lock when installing rpm

[lug at the-leveys.us (Don Levey)]

Due to a server crash last night, I'm temporarily setting up my
workstation as a mail server, running Fedora Core 2.  To that end, I'm
trying to
install some rpms for clamav.

I tried the normal rpm install:
	rpm -Uvh <rpm name>
and it seemed to hang.  I terminated the shell in which this was running,
and tried again, and got the following:
	warning: waiting for transaction lock
<ctrl-c>
	error: can't create transaction lock

The process that was running the original rpm is still around, even
when trying to kill-9 it:
	root     31879     1  0 09:15 ?        00:00:00 rpm -Uvh
clamav-0.74-1.i386.rpm

Any thoughts on:
1) How to kill the previous process when kill -9 doesn't?
2) Any other way to get this rpm to install?

TIA,
 -Don