AdminCP menu not expand
 

Hi,

In the past 2 days i have a very strange problem.
When i click to the "+" into any menu in the admincp, the menu does not expand.

The shortcut is like this : /admincp/index.php?do=buildnavprefs&nojs=0&prefs=gars_0,mgc cbevo_0,vbulletin_0,vbulletin_1,vbulletin_2,vbulle tin_3,vbulletin_4,vbulletin_5,vbulletin_6,vbulleti n_7,vbulletin_8,vbulletin_9,vbulletin_10,vbulletin _11,vbulletin_12,vbulletin_13,vbulletin_14,vbullet in_15,vbulletin_16,vbulletin_17,vbulletin_18,vbull etin_19,vbulletin_20,vbulletin_21,vbulletin_22,vbu lletin_23,vbulletin_24,vbulletin_25,vbulletin_26,v bulletin_27,vbulletin_28,vbulletin_29,arcade_0,vbo rg_0,vbacmps_0&dowhat=collapse&id=vbulletin_0#grpv bulletin_0

What are all these "vbulletin_1, vbulletin_2 etc" ?
I haven't do any changes in the forum files or database in the past 3-4 months!

If anyone has any suggestions or solutions please help