Comment Which version of which distro? (Score 1) 963
Thoroughly testing one platform is hard enough. Testing against each and every current version of every popular distro is a lot of regression tests.
The situation with Linux isn't horrible for open source software--the load of testing all those system permutations is theoretically distributed across the teams of all those distros.
For commercial software (and open source if we were completely honest), testing on loads of platforms is just a lot of time and energy that companies like Adobe don't really have to dedicate to such a small percentage of their potential customer base.