Why Privacy+ and BetterPrivacy Don't Delete All LSOs
What most people, even those writing these add-ons, do not know--or in BetterPrivacy developer's case, refuse to believe--is that there are two locations (for each user profile on the computer) where Web sites store Flash cookies (LSOs).
By default, most LSO removers only check the "#SharedObject" subfolder in Macromedia's "Flash Player" folderWhichever.
There is another location in the "Flash Player" folder, "macromedia.com\support\flashplayer\sys", where LSOs are also stored. This also happens to be the location where the Global Settings LSO resides, which was created when you went to Macromedia's Settings page. When someone running Firefox with either BetterPrivacy or Privacy+ visits a site that sets an LSO, the LSO is placed in the folder that BetterPrivacy or Privacy+ are NOT monitoring.
BetterPrivacy is set by default to monitor the "#SharedObjects" folder, and I assume that Privacy+ is written to check the same folder. If the preferences are changed to check the #SharedObjects folder, then the LSOs will be placed in the "sys" folder. If it is set to check the "sys" folder, then LSOs will be set in the #SharedObjects folder.
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