showgroups.php doesnt update

[Elitek550]

Hey,im running 4.1.5 and i have a problem, when i add for example a new administrator at the forum, in the showgroups.php page takes 2 o 3 hours to show the change, also sometimes I appear offline in the showgroups page.
I tried turning off the plugings, and changind the style, but still doesnt work, please help.

fixed: i put the showgroups.php for 4.1.4 and works!