Some tools which may (or may not) help create a work order log without interruption - and which are not (as far as is known) spyware/keystroke loggers
History Viewer 4.8
http://www.historyviewer.net/index.html
conversely -> http://www.deletehistoryfree.com/
Task Timer is an HTML5/JavaScript project I (Schuyler Cebulskie) created in order to fulfill my needs in keeping track of the time that I spent working for a company that I was an intern at.
http://code.google.com/p/simple-task-timer/
Managing tasks is generally not a fun way to spend your time. We created Remember The Milk so that you no longer have to write your to-do lists on sticky notes, whiteboards, random scraps of paper, or the back of your hand. Remember The Milk makes managing tasks an enjoyable experience.