A recent market share report released by netapplications.com shows that the Mac OS X market share (with both the the PowerPC and Intel architectures factored in) reached 5.67% in December of 2006, up from 5.39% in December.

Apple's operating system has now surpassed Windows 2000 for second place in market share positioning. Windows 2000 fell from 8.75% to 5% over the course of 2006 while Linux remain steady at 0.37% and Windows Vista installs pushed it from 0.11% to 0.16% of the total market share.

Windows XP held on to its number one slot, growing from 80% to 85.30% throughout 2006.

The full breakdown of the report is as follows:
Windows XP: 85.30%
Windows 2000: 5.00%
Mac OS: 4.15%
Windows 98: 1.77%
MacIntel: 1.52%
Windows ME: 0.89%
Windows NT: 0.68%
Linux: 0.37%
Windows Vista: 0.16%
Windows CE: 0.04%
Windows 95: 0.03%
Web TV: 0.02%
PSP: 0.02%
Hiptop: 0.02%
Series60: 0.01%