[CentOS] Automount of USB drives

Hi,

I am using 5.1, Until yesterday morning when we had a power cut
for 9 hours [no proper UPS], the automount of USB drives worked
properly. 

Now when I connect any USB drive [hard drives & USB sticks], they
show up in dmesg, and they are being properly recognized, but I
have to mount them by hand.

Any suggestion?

-- 
Thanks
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