I've been running AB for the past 6 months and I haven't crashed once. There are many factors why such things could happen... Things on Windows > 7, are not as stable as there, most of the times the cause is AntiVirus you're running or some other privilege settings. It could as well be proxy, so make sure to check those things before posting a thread. Thanks
As I mentioned above... also Out, is solo core developer of AB and he's sure doing his job. Most of the issues you're experiencing are explained in support section, so please check that before nagging.