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by julie1 3720 days ago
almost all windows since 95, a lot of mac OS since 7.5.3, OS2, a lot of linux, OS9000, solaris, AIX and *BSD.

My experience recently has been that all OS are having problems. Just to name a few : - HW vendors doing sub par drivers and documentations, and integration :you even have more than one HW for the same model; - ACPI - forced obsolescence of peripherals; - outsourcing is clearly related to loss in quality especially in HW; - too much packages and dependencies;

And still : most developers don't know how to do asynchronuous programming, and that is really a problem when everything is about handling events.