as to why it's significant. first, cryptome doesn't really filter stuff, so they aren't "endorsing" it. someone submitted it to cryptome. perhaps they thought it was related to the recent closure (at first glance, it doesn't seem to be).
here you go: Court records show that, in June, Lavabit complied with a routine search warrant targeting a child pornography suspect in a federal case in Maryland. That suggests that Levison isn’t a privacy absolutist. Whatever compelled him to shut down now must have been exceptional.
from http://www.wired.com/threatlevel/2013/08/lavabit-snowden/
The original poster believes that this case is apparently the reason for Lavabit shutting down. The issue as hand is that a proper search warrant has been issued for the email address in the title. Lavabit appears to have chosen to shut down rather than respond to the search warrant (or has responded to the search warrant, but chosen to shut down rather than have it happen again)
[0] - http://lavabit.com/