Yes, I saw that two problems. For apache, the problem is at the admin side, so, it's not so much a problem, but for the browser, it's a real problem, and the link I add speak about that.
There's also the list of supported browser there : http://en.wikipedia.org/wiki/Server_Name_Indication
I saw that on unsupported browser, the "first website" is shown in place of the good one :
Warning: If a user's browser does not support SNI then the first SSL site in the configuration file will be displayed. It is recommended that the first entry is to a page that informs the user what the server requires for use.
I think it really depends the importance of the SSL websites but thanks you for the precision about falko intention