Gamasutra reports DS and Wii are doing pretty well. February sales for hardware units:

• Nintendo DS: 485 000
• Nintendo Wii: 335 000
• Playstation 2: 295 000
• Xbox 360: 228 000
• Playstation Portable: 176 000
• GameBoy Advance: 136 000
• Playstation 3: 127 000

Or, by company:

• Nintendo: 956 000 units sold
• Sony: 598 000 units sold
• Microsoft: 228 000 units sold

(Unfortunately there was no data on the original Xbox.) Nintendo is doing really well – deservedly. (Via /.)