Nimbuzz, a popular multi IM and social network client, that allows you to call, chat and text your friends, has been updated for Symbian S60 devices. Version 2.0 brings tons of improvements and changes such as:

* brand new UI, which now has 4 tabs: Nimbuzz (buddy-list), Chats, Phone Calls, and Messaging.

* Buddy list sorted by favorites.
* Customize ringtones for new chats, messages, and calls.
* Make SkypeOut calls from the tab “Phone Calls” and always see what your current SkypeOut credit and username are.
* Improved SIP performance - network/firewall problems have been fixed and battery life improved.
* New connection management

via: Update: Nimbuzz 2.0 - Improved interface and functionality

See More: Nimbuzz updated for Symbian S60 devices