I have had LQ Radio in my podracer feed
for a couple of years.
It currently does not seem to be active. I haven't caught a podcast for a long time.
You can find lots of Linux podcasts at the Linux Link
. My favorites are Linux Outlaws, Kernel Panic, Klaatu's The Bad Apples, and TLLTS.
Lotta Linux Links and Linux Basement are pretty good.
Talk Geek to Me and Verbal's Linux Trivia are good, but sporadic.