Thank you, Shaon! I am trying that now and will watch to see if the lfd alerts quiet down (will let you know).
What is strange though, the alert is being triggered even for those users/visitors who are unlikely to be anywhere near the download manager page(s). That’s what concerns me a bit.
Note: I went to an older, test install of my site that has not yet been updated to the new version of Download Manager. It does not appear to contain the jquery.cookie.js file at all.
Google search suggests that Mod_Security has a long known issue with flagging file names with cookie in them. This may be the issue?