I mapped the last 6 months of Bitcoin price and volume versus the major security breaches at Mt. Gox, mybitcoin and bitcoin7.   

Here is the graph and link to posting.

http://bitcoineconomy.wordpress.com/2011/12/14/update-december-14-2011-correlation-of-bitcoin-price-drops-to-security-breaches/

http://bitcoineconomy.files.wordpress.com/2011/12/bitcoinsecurityversusprice.jpg

Price is the black line with values on the right side of the graph.  Volume is the colored bars and volume on the left side of the graph.  (Thanks Mt. Gox for the graph).