From http://mjm-labs.com/viewer/changes.php

• Fixed crash in update dialog, not going to the Website, but showing "Loading Second Life..." instead.

• Based on Linden viewer 1.22.11.
• Updated patches from the Cool SL Viewer. This includes a couple of new features.
• New installer for Windows and Linux. Yes, there is also an installer for Linux now.
• Improved update of grid information from website. Grids can now be deleted, if they no longer exists.
• Allow linking more than 255 prims creating multiple linksets (thanks to Suzy Deffeyes for the patch).
• More cleanup of SL-related links.
• Some crash and bug fixes.

What works

1- Installation, load, login, change preferences.

2- Menu elements, textures, sound, chat, effects (water densiti, glow...), animations, upload textures, upload sound, upload animations.

Everything tested works fine.

What does not
Change to full screen (ALT+Enter)

What was not tested
FSAA 2x, 4x... and other grafic enancer effects

Additional Comments

my machine specs:
Intel Pentium D with 2 cores at 3.000Mhz
3Gb DDR2 Ram
Nvidia Gforce 8800GT 512Vram
Seagate sata 80Gb HD
Running Debian squeeze (testing) with custom kernel.
Installed oficial Nvidia drivers ver. 190.42