Catching up on reading news from last week I came across a post by Dave Winer in which he theorizes:

Theory on why Podshow needs $25 million. To defend against a trademark infringement suit from Apple. Alternate theory, to re-brand, to avoid a trademark infringement suit from Apple.

I wonder if we've seen evidence to suggest there's not a Apple-Podshow partnership in the works? I don't give the idea much creedence, but Podshow partner Adam Curry did talk with Apple prior to Apple's release of iTunes to support podcasting.