http://langa.com/newsletters/2006/2006-09-25.htm
The LangaList
Standard Edition
Another Expanded Issue!
2006-09-25
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Outlook is designed to open attachments only after copying the file to disk (for security, stability and recovery). Opening attachments prompts Outlook to create a “super hidden” folder (which Microsoft calls an “Outlook Secure Temporary File folder”) with a filename that begins with OLK (apparently an abbreviation for “Outlook”) and ends with a randomly generated string of characters. This is where the copy will be made and stored temporarily. At least that’s the design— these files are not deleted by Outlook right away if the attachment file is still open when you close Outlook.***End Quote***
Argh. A directory structure hidden away and unfindable. Wonder how muck space this crud is occupying?
Reinke Faces Life 