1up nuked all the podcasts... I really wish someone just uploaded them to archive.org or something.
As with the old Gamespot content, it's kind of sad that it can just disappear entirely like that.
Edit: someone put it up on Archive.org: https://ia601504.us.archive.org/24/items/1UPpodcasts2008/07:16:08.mp3
Man, Shane and Shawn. It's like a time warp.
They're back. IGN has been contracting me to fix the 1up issues that resulted from the server move. It's taken a while as I only have time on nights and weekends. Also the apache rewrite rules on 1up were an unholy mess.
1up should be working now and to the best of my knowledge the podcasts are back and working.