Hamburg  - Windows XP remains the most common computer operating system among internet users, according to a survey conducted by a German marketing firm.

According to a survey by Fittkau & Maass, 75.8 per cent of internet surfers use Windows XP while only 13 per cent use Vista Online, which has been on the market since early 2007.

Next in popularity come Windows 2000 (4.6 per cent), Mac OS (3.8 per cent) and Windows 98 and ME (both at 1.3 per cent). Only 1.2 per cent of surfers use Linux. The results were based on an internet user survey of more than 100,000 German-speaking computer users. (dpa)