[ubuntu] Ubuntu 12.04 audit.log not working

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http://ubuntuforums.org – Hello Guys, I have recently update my ubuntu 10.4 to 12.04 every thing working fine except /var/log/samba/audit.log it's empty it's not making any log, while my second problem is that samba recycle bin not recycling deleted files it's just recycling the folders. for example; if i delete /Audit-Data/Test/Test.doc samba recycles /Deleted-Files/Audit-Data/Test/ Kindly help me it's urgent (Hardware)