When I enable the jquery_update module dev version hide menu of admin Module

and load jquery.min.1.5.js on template show all menu

Files: 
CommentFileSizeAuthor
admin-3.jpg95.73 KBmjdj_j_pro
admin.jpg93.38 KBmjdj_j_pro

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Same happens here, it generates an jquery error.

how to fixe problem ?