Ok. Here's what I find amusing about all of this:
So the Dems want to see if they can find emails having to do with the firing of the Federal Attorneys. That sort of stuff is supposed to be done via email from White House accounts. However, they find out that some members of the White House use RNC accounts as well and that even though they're not supposed to use them for "official" discussions (and not use the White House ones for political discussions), some may have. So the Dems want to subpoena those email accounts, but the RNC computers are regularly deleted, so the email is "lost".
BTW. The "lost" statement does not mean "lost for the investiation". They are "lost" from the presidential record. The effect of this on the investigation at hand is a complete wash. Had the email's been properly handled on White House servers, they would be protected by Executive Priviledge. Those on the RCS system were deleted. In either case, they would not have been able to read them. It's a bunch of hoey about nothing.
The issue at hand is that there may have been a violation of another act which requires official white house communications to be documented and recorded. Since these conversations took place on outside computers, the record is lost.
Nice spin though!