which you have not mentioned, then it is a legit file.
if not, delete.
a248.e.akamai.net/7/248/11498/v1/www.moveonpac.org/content/qt/qtplugin.cab shows up on my hijack this scan. It is listed as a quick time operation. (Well isn't everything found on the internet correct?;-))
HJT recommends fixing (deleting). I searched akamai and it appears to be a legitimate company. I just don't know. Any help would be greatly appreciated.