Reason for latest crash is that you never updated the driver. In fact, you made it older:
BugCheck 1E, {0, 0, 0, 0}
Unable to load image \SystemRoot\system32\DRIVERS\athurx.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for athurx.sys
*** ERROR: Module load completed but symbols could not be loaded for athurx.sys
Probably caused by : athurx.sys ( athurx+9325 )
Followup: MachineOwner
0: kd> lmvm athurx
start end module name
fffff88002200000 fffff880023da000 athurx T (no symbols)
Loaded symbol image file: athurx.sys
Image path: \SystemRoot\system32\DRIVERS\athurx.sys
Image name: athurx.sys
Timestamp: Thu May 20 07:48:34 2010 (4BF52192)
CheckSum: 001E3610
ImageSize: 001DA000
Translations: 0000.04b0 0000.04e4 0409.04b0 0409.04e4
Install from here and it will be 6/1/2011 when done:
http://www.atheros.cz/atheros-wireless-download.php?chipset=64&system=6