SQL 2005 x64 exception

Recently We've migrated SQL 2005 x86 Enterprise running on Windows 2003 Enterprise to new hardware where is running Windows 2008 SP2 and SQL 2005 x64 SP4 with CU3. We migrate users (with standard approach by Microsoft) and application databases to new server. Everything is looking ok, applications working. But we've got some SQL exceptions like below.

Is there any known bug related to that? Could someone help us.

Memory                              
MemoryLoad = 15%                    
Total Physical = 32733 MB           
Available Physical = 27752 MB       
Total Page File = 64782 MB          
Available Page File = 60344 MB      
Total Virtual = 8388607 MB          
Available Virtual = 8355366 MB      
**Dump thread - spid = 84, PSS = 0x00000000D1A43ED0, EC = 0x00000000D1A43EE0                                    
***Stack Dump being sent to D:\MSSQL.1\MSSQL\LOG\SQLDump0005.txt                                                
* *******************************************************************************                               
*                                                                                                               
* BEGIN STACK DUMP:                                                                                             
*   04/25/14 12:54:30 spid 84                                                                                   
*                                                                                                               
* ex_handle_except encountered exception C0000264 - Server terminating                                          
*                                                                                                               
* Input Buffer 255 bytes - 

There is also some output from debugger:

0:000> .ecxr
rax=0000000077207080 rbx=0000000000000000 rcx=0000000016a37d50
rdx=0000000000000000 rsi=0000000000000000 rdi=0000000000000440
rip=00000000772070bd rsp=0000000016a38240 rbp=000000000000003f
 r8=0000000000000000  r9=0000000000000000 r10=0000000000000000
r11=0000000000000287 r12=00000000032fdab0 r13=0000000000000000
r14=00000000000019e4 r15=0000000049b8d00c
iopl=0         nv up ei pl nz na po nc
cs=0033  ss=002b  ds=002b  es=002b  fs=0053  gs=002b             efl=00000206
kernel32!RaiseException+0x3d:
00000000`772070bd 4881c4c8000000  add     rsp,0C8h
0:000> kC 1000
Call Site
kernel32!RaiseException
sqlservr!DmpGetClientExport
sqlservr!_____SQL______Process______Available
sqlservr!_____SQL______Process______Available
sqlservr!_____SQL______Process______Available
sqlservr!SQLExit
kernel32!UnhandledExceptionFilter
ntdll!RtlpNotOwnerCriticalSection
ntdll!_C_specific_handler
ntdll!RtlIntegerToChar
ntdll!_C_specific_handler
ntdll!RtlRaiseStatus
ntdll!RtlpNotOwnerCriticalSection
ntdll!LdrGetProcedureAddress
sqlshield
sqlservr
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