This was posted in a thread https://community.sophos.com/products/unified-threat-management/astaroorg/f/55/t/44482 . So this problem did not start with v8, but it does exist in the current beta.
The FTP proxy works fine in transparent mode but when you set it to non transparent mode, all requests sent from a browser are unsuccessful. Manual ftp proxy works fine if I use ftp client software. Too many refreshes on the browser generate error in proxy logs so the browser is connecting to the ftp proxy (frox) server, just not getting anywhere. Tested on IE8 vista and Firefox 3.5.8
Screenshots:
1. Ftp proxy log showing successful connection with me clicking on refresh too many times[;)]
2. Connection using ftp client software is successful with non transparent proxy.
3. Successful client software connection in proxy logs using non transparent proxy.
