Yes, there have been occasional bugs for particular people, but I don't think anyone has reported a major consistent "bug" as such.
What I have noticed on the alpha test forum is a slow increase in people reporting things which aren't bugs, but which do require fine tuning. eg heat build up in response to velocity rather than engine use per se, the over-sensitivity of mouse steering control and lack of a reasonable central dead-zone for the mouse, some dissatisfaction with the "sparks" graphic when systems damage occurs, etc.
Oh, and re.the OP - I predicted alpha release on Thursday or Friday last week [smug mode on]
