From the COD:BO Forums:

"Hi all,

GameServers.com will be rebooting ALL Call of Duty: Black Ops servers tonight in preparation for a new patch that is oncoming. The Patch is server-side only, but will address some critical server-side issues that are affecting the community-at-large.

If your server temporarily goes down, or if you're in a game that ends abruptly, this is why. Please just reconnect in a few minutes and everything will be alright =).

Regards,
-JD"

Source:
http://www.callofduty.com/board/viewtopic.php?f=71&t=324543&sid=f8pvmjql0sua77tgfb8ch2e6v1

This is a QA gathered from Treyarch PCDEV on twitter. Some really good answers on the questions. Good to see someone that steps up and explains and listen.

Source: http://blackopscallofduty.net/call-of-duty-black-ops-qa-about-patch-and-fixes-on-pc/1789

Q: Will we get the /connect and /reconnect commands in the next patch?

Treyarch
A: /connect is coming back. maybe not next patch but I promise it is coming back.

Q: Will the last killcam (End of the round) lag too fixed if the patch comes out?

Treyarch
A: TBH I’m not sure yet what is causing killcam choppiness, but we see it too. Will fix.

Q: Not asking specifics, but now that the game is launched, are mod tools ideas being kicked around yet? and congrats on the game!

Treyarch
A:Thanks, man. mod tool dev started already. no bandwidth to discuss until after some patches though.

Q: Will it be possible at some point to have servers with lower max player counts? 18 players in FFA games for example = too chaotic!

Treyarch
A: Will add 12 player playlists.

Q: Will it be possible to put reserved slots for my friends and me on my own ranked server again?

Treyarch
A:We removed the feature because it was abused. will fix.

Q: Are you aware of the bug where theater mode replays are only being saved on some servers? Mostly treyarch servers seem to work

Treyarch
A: Film recording should be fixed – this was a backend config problem for rented ranked servers only

Q: Have you thought about allowing editing of classes in a server?

Treyarch
A: We tried this but had a lot of problems due to the way the data is secured. had to bench the feature for future review.

Q: Hi, if i go into the server browser, sometimes i click on a server nothing happens, its not full etc but its just that nothing happen

Treyarch
A: This is a bug – highlight another server then double-click the one you want to join.

Q: Are there any engine optimisations coming I am above the min spec but still get awful fps in lowest settings, not lag related.

Treyarch
A: We have some nice optimizations for better FPS going into QA tomorrow.

Q: Awesome, will the next patch be in the next couple days you think?

Treyarch
A:Trying to release patch before the weekend. will go into QA tomorrow.