Got a quirky one which I don't understand here :)

Everything seems to be workng fine except the last 10 visitors report is duplicating or in some cases not tracking a sale.

- that is each customer is appearing twice so in effect I see the last 5 visitors at a time ( twice each - identical information )

- sometimes it misses a sale so a customer who has completed a purchase is showing as a bailed cart.

I am on Zen 1.3.8 - is there anything I could have stuffed up on install to cause this behaviour :)