Cookie AutoDelete is simply superb, especially the active mode, however I found a minor bug-glitch whatever you may like to call it. I hope that it will be removed in near future.

When you open a site in the same tab, which already has some other site open, then the cookies of the previous site are not deleted at once ( I am in active mode ). You can keep on opening sites successively in the same tab while your cookies would be piling up cumulatively. When you close that tab, then all the accumulated cookies are deleted at once ( active mode ).

Hope thats enough info to help in debugging. Still giving 5-stars because I really like the instant cookie delete in active mode with 0.02 minutes of delay.