Defaultware has released Proteus 4.1.2, the latest version of its multi-service instant messaging client for Mac OS X. The application supports all major instant messaging services ( ICQ, AIM, MSN, Yahoo, Yahoo Japan, Rendezvous, and Jabber). Version 4.12 adds the ability to know when users are logged in with a mobile device, brings back Status Floaters, the ability to send ICQ file transfers, and addresses numerous bugs. Proteus is priced at US$15 and requires Mac OS X 10.3 or later.