Multiple session entries

[eluser]pickupman[/eluser]
I had this same issue. I used WanWizard's session library he posted in the [url="http://ellislab.com/forums/viewreply/811009/"]forums[/url]. As pointed in this thread and the other is session rotation. During garbage collection some session are not updated, sometimes caused by concurrent requests.

After using his session library my issue went away.