Not BSOD but freezing

Well I did some research, and you said the bugchecks are indeed network related mainly your
D-Link DWA-131 Wireless N Nano USB Adapter, where the most up to date drive I found is very old
and is the one you already have.

Code:

lmvm RTL8192su
Browse full module list
start             end                 module name
fffff880`026a3000 fffff880`02766000   RTL8192su T (no symbols)           
    Loaded symbol image file: RTL8192su.sys
    Image path: \SystemRoot\system32\DRIVERS\RTL8192su.sys
    Image name: RTL8192su.sys
    Browse all global symbols  functions  data
    Timestamp:        Thu Aug 11 05:36:33 2011

Other then that I would have suggested you use the Ethernet but Atheros.cz
doesn't offer a driver for Windows 7, which is odd, the driver you currently have is not too new
as well but it's worth a shot.

Code:

lmvm l1c62x64
Browse full module list
start             end                 module name
fffff880`03eb4000 fffff880`03ed2000   L1C62x64   (deferred)             
    Image path: \SystemRoot\system32\DRIVERS\L1C62x64.sys
    Image name: L1C62x64.sys
    Browse all global symbols  functions  data
    Timestamp:        Thu Jul 19 05:55:34 2012

Stop using the Wireless adapter and use the Ethernet for a while and see how things fair,
the Juniper Network is not off the hook as well it might be helpful to remove if you can afford it.

Let us know.

Good news :)!
Anything else, since?