長期以來一直都是使用免費的comodo firewall 和 comodo internet security，但是自從自動升級comodo firewall 5.0之後，居然導致alcohol 52% Free Edition, Daemon Tools Lite等虛擬光碟軟體無法使用的問題，本來以為只要重裝就會恢復，但是移除、重裝時居然發生安裝錯誤，不過警告訊息裡看到問題出在shell code injecton，所以上網搜尋一下在下面的網站找到解決方法
http://forums.comodo.com/defense-sandbox-help-cis/alcohol-120-does-not-run-not-a-guardxxdll-issue-issue-256-t62075.15.html
My recommendation after my experience is the following:
* Add the software installer and the driver installer C:\Documents and Settings\Michael\Local Settings\Temp\sptdinst.exe to buffer over flow exemptions. Then run the installer.
* After complete installation add all the executables (.exe, .dll, .com, .sys, .cmd, .bat files) in the C:\program files\alcohol soft\alcohol 120 directory and all its sub-directories to buffer over flow exemptions. You may need to repeat this execercise if program udates create new executables. Alternatively (less securely, but moore proof against updates) add he whole directory
* Add the C:\program files\alcohol\alcohol120 directory and all its sub-directories (tick include sub-directories) to Trusted Files. This automatically adds all the files file by file so should not be a security risk.
* Reboot and start Alcahol
