Hello all ,
This is my first topic on BitDefender Forum so excuse me if I posted in the wrong section
, I have Windows 7 Ultimate x64
installed on my pc which is GA-G41MT-S2P , 4G RAM
When I installed BitDefender Total Security 2013 x64 the problem began :
When I open " My Computer " the window hangs for more than 1 minute , and if I clicked on anything , explorer.exe crashes .
Note that this problem (Explorer.exe hangs and crashes) doesn't occur only on startup , it happens randomly (many many many times)
and it's not only the problem with opening and exploring folders , when I open start menu and click on any program menu , all files ( like
files under accessories submenu are shown white ( like it's unknown extension ) , then when I try harder to open more sub menus , the
whole start menu and taskbar goes unresponding . 
I succeeded in knowing what causes this annoying problem , it's BitDefender
HOW ?
when I uninstalled it , the problem disappears , when I reinstall it , the problem comes back .
here is a list of programs which I installed on windows :
-Malwarebyte's anti malware ( as an alternative untill I can figure out the resolution)
-PowerISO
-Nero12
-TuneUpUtilities2013
-Real Player
-WinRAR
-Microsoft Office Professional Plus 2013 Preview
-Adobe Reader , Shockwave and Flash Player
-Google Chrome
, I tried disabling Active control in bitdefender , but nothing is fixed .
I tried adding explorer.exe to processes exclusion
I tried with a program called ShelEXView and I disabled all non microsoft objects , but noting is fixed so I re enabled what I disabled .
I have been googling and trying to find a resolution to this annoying problem , but noting helped me until now .
It'll be appreciated if you guys helped me because I can't do without BitDefender TS .
(Sorry for horrible English) 