Str82u - 3:42 pm on Mar 28, 2013 (gmt 0)
This looks like you're blocking all bots
Maybe I'm wrong and it's skipping over the disallows of the other bots.... I'd do this though
EDIT: I've heard that blocking a lot of pages in robots.txt isn't good so maybe you just shocked googlebot a bit with the new htaccess. We blocked something last month to get rid of some pages and took a dip for about 4 days; could have been unrelated though.