Inconsistent just has too many negative ideas surrounding it.
Actually, it has been rather consistent. I start the podcast just as I get on the bus in the morning and it is just finishing as I have to get ready to get off the bus.
While the phrase "CNET's podcast of indeterminate length" has a nice ring to it, it's not entirely accurate. Although any BOL podcast is initially indeterminate (i.e. before it's actually recorded), once the podcast is recorded it's length is completely deterministic.
It would be more accurate to say "CNET's podcast of inconsistent length" because it's perhaps closer to the intended meaning and remains correct even after the podcast is recorded and distributed.

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