Even though there was a new Preview version released around 9/20 there is a newer Beta released a couple of days ago. The new Beta version contains the latest Adobe Flash 11.4 .278 released a couple of days ago also. This new beta with the flash works great on my system. If you want to download it it can be found Here:
[View:http://forum.maxthon.com/redirect.php?tid=83238&goto=newpost#newpost:550:0]