Not download crazy Dbone. Just are regular download for me. At that time I turned on AutoSandbox because a friend at Facebook was complaining about it. I was downloading:
a) EASEUS Todo Backup Pro offer that I availed.
b) Avira vdf
c) Avast manual updates
d) Latest Adobe Flash
e) Panda USB Vaccine at softpedia
f) Superantispyware database definitions(manual)
Just that. And it wanted to sandbox a, b,c,e, and f. It didn't lift a finger in d.
Just for fun, after the download transfered it to a pendrive, turned-off AutoSandbox and used Comodo sandbox. It only alerted "e" which when submitted classified as Safe.
There are still many experiences with the AutoSandbox by other users. Was just an example of how it behaved on mine. Yours as you say, since beta, differs from others as mine as also on the different posts in the avast forums about it. As popular as the program is the need to inform/teach the ordinary users about it should be considered. Take the case of comments at Facebook. I surmise that 5 out of 10 users don't like it because because they don't know what it is. Example of AutoSandbox flagging Adobe Flash as compared with others that are not alerted like me. AutoSandbox sensitivity. Interesting topic on Sandbox (though not yet finished). Some interpretations of Autosandbox by users in relation to Comodo sandbox.
Personally, I'd stay with Sandboxie paid(versus Avast Sandbox), Comodo D+ HIPS/and sandbox /Online Armor HIPS and RunSafer (versus Avast Behavioral Shield and AutoSandbox), but that's just me