I'd just like to say that, if you're editing on a PC, it might be wise to use a dedicated PC for editing. In my experience, which is beyond most, when it comes to personal computers (I started programming on a Commodore Vic 20 in 1981, and I've been a professional software developer ever since, working for IBM on PC's, mainframes, AS-400s, Risc 6000s, PS2s, with VM/SP, MVC, CMS, OS/2, DOS, Windows, AIX, and OS400, then started my own business 13 years ago doing software development for Windows 3.1 to XP, OS/2, DOS, and Linux). I know my systems really well, inside and out. Those of you who are still reading can heed this statement, or write me off as a "uninformed", if you wish....
Windows does NOT have a coherent security model. It is inherently unsecure, and if you wish to have a reliable editing system on Windows, keep it firewalled off from the internet (with an external firewall). All of those anti-virus packages and software firewalls interfere with the operation and performance of the machine, and catching some poorly written worm/virus is sure to cause system problems that will impact your schedule. When editing, system performance is a big deal, so you don't need a slew of background processes sapping your performance. Also, you don't need your schedule to be impacted by pesky infections.
That is my professional opinion.