experience per hour glitching out

[WyrmKin]

I was doing some exp farming and noticed that my exp/h tally had glitched out. It rolled to a huge negative number and was then counting up (towards zero). It eventually corrected itself and showed I was at 2trillion per hour, and then flipped back to the counting thing and has been doing it ever since. Anyone else experience this issue?

Imgur: The magic of the Internet

[Saico]

I do have this issue sometimes, dont know the cause, maybe when I flip from group to group, but I extract again archives and/or reset Thud it runs correctly.

[Striik]

I have same problem.