What was wrong with the memory on other the BIOS version then?

Because i am noticing something strange with my memory latencies....
In my BIOS the Latencies are set to 7-8-7-24 and in CPU-Z, AIDA64 and Memtest86+ v4.20 it shows up as 8-8-7-24. :?

Right now i have F5 on my Z68X-UD7-B3 but F7 is the latest.
Should i flash to the latest version?