It came with Vista Home Edition installed. That was buggy and slow. But that was gone a short while later. Grabbed the Debian Net Install Disk, and completed a laptop install. Now it purrs along.
Its a nice notebook, with decent graphics, a large disk, and plenty of RAM. Three USB ports, inbuilt card reader, wireless and lan connections.
Aside from the poor battery performance, I'm pleased with the machine.
Here's the full specification:
Fujitsu-Siemens Amilo Pi 2515 Notebook specifications
Intel Core 2 Duo T7100 1.8 GHz
2048 MB, DDR2 PC5300 667MHz. 2x1024MB
Intel Graphics Media Accelerator (GMA) X3100, up to 384MB video RAM
15.4 inch 16:10, 1280x800 pixel, WXGA BrightView, TFT
160 GB - 5400 rpm, WD Scorpio WD1600BEVS
1 Express Card 54mm, 3 USB 2.0, 1 VGA, 56k V.92 Modem
Realtek RTL8101 (10/100MBit),
Intel PRO/Wireless 3945ABG 802.11 a/b/g
Optiarc DVD RW AD-7540A
8x (DVD-R/+R/+R DL/-RW/+RW/-ROM)
length x width x height (mm): 355 x 255 x 40
Weight: 2.71 kg
Power Supply: 0.3 kg
44.4 Wh Lithium-Ion, 11.1V 4000mAh