The finale of season one will be on May 13 2010, which will be the 22nd and last episode. Most likly they'll take a break to film meer The Vampire Diaries episodes so they should be done door September, and I say that because season one started in September!
The reason they took the breaks is too film meer episodes. It's still season one untill May 13! If u want to bevestig this of get the summary of any episodes u may cheak her on WikiPedia!
link I got all my information from there, so I own none of what I zei except for my words, the ideas came from here and I beleive them! All except the September starting of season two, that WAS mine!