Unity 4.3 does not support pre-DX9 chipsets and, after releasing Unity 4.3.6f1, we eliminated the extant 4.2 runtimes. This has led to a number of customer complaints that their chipset is erroneously detected as not supporting DX9 - all of these complaints

Steps:

1. Install Unity Web Player on machine with Intel 82865G graphics chip.
2. Open browser and navigate to http://unity3d.com/webplayer/setup
3. (EXPECTED) Web Player loads and runs, displaying webplayer setup app
3. (OBSERVED) User receives an error indicating that DX9 is required and their chipset is not supported.

This error occurs on all Unity runtime versions from 4.3.0 onwards.