Schwab starting transition to Linux?

It looks as if Schwab is starting to transition the schwab.com site to Linux. We first noticed Linux in use at www.schwab.com on 18th June, and currently two requests out of 10 are served from Linux.

schwab.com is one of the busiest [and possibly the busiest] sites for SSL encrypted transactions in the world. Presently Solaris transacts most of the world's share trading, but if Schwab completes its transition successfully, it will become another cornerstone reference site for the Linux community, of the same ilk as Amazon and Google.