Today, a BSOD (along with the usual freezes):
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Dump File : 113011-30513-01.dmp
Crash Time : 11/30/2011 7:10:10 AM
Bug Check String : PAGE_FAULT_IN_NONPAGED_AREA
Bug Check Code : 0x00000050
Parameter 1 : ffffb8a0`0a1d3648
Parameter 2 : 00000000`00000000
Parameter 3 : fffff800`02f1795e
Parameter 4 : 00000000`00000007
Caused By
Driver : Ntfs.sys
Caused By Address : Ntfs.sys+8db14
File Description :
Product Name :
Company :
File Version :
Processor : x64
Crash Address : ntoskrnl.exe+7cc40
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\Windows\Minidump\113011-30513-01.dmp
Processors Count : 4
Major Version : 15
Minor Version : 7601
Dump File Size : 286,744
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Startup repair does not fix the problem.