ad-aware is notorious for quarantining website cookies. you have to look on the results screen and see if it categorized your files as "tracking cookies"
Also, if you take any small .exe program and rename the extension to .txt and open it with notepad, you generally see a bunch of numbers and symbols. (I had someone request a sheet in excel once that couldn't make it through their firewall...must have been at work. so I changed it into a text file and copied it into the body of the e-mail and it sailed right thru. all they had to do was paste to a notepad file, then change the extension back to .xls and it worked)

bottom line is you should be ok to keep the textfiles out of quarantine.