Thank you for reply.
I checked our task servers and they have old version. I updated them and tasks and policies start working.
After this, i reinstall SIM and it prove to be, that some components (e.g. Active Center) is not updated to SP2.
I ran upgrade and reconfigured server with AexConfig /configureall.
Now all server components are working normally (missing inventory plugin i import as describe here: http://www.symantec.com/business/support/index?page=content&id=TECH180513).
Now we have only problem with brocken agent on 6000 clients. Altiris service raise an exception at start and stop working:
Exception - Access Violation: 00000000
Bit Flag: 00000000 (Read Error) - Memory Address Accessed: 00000048 : 063476D8
EAX=00000038 EBX=00000000 ECX=00000038 EDX=06348330 ESI=00B66F04
EDI=0468DA41 EBP=06347B40 ESP=06347B3C EIP=045E4F0D FLG=00010202
CS=001B DS=0023 SS=0023 ES=0023 FS=003B GS=0000
Context Record: 063475C4 Exception Record: 063475C0
Stack Trace
00D6874A (Unknown Symbol) : C:\Program Files\Altiris\Altiris Agent\AeXNSAgent.exe
00CE41D8 (Unknown Symbol) : C:\Program Files\Altiris\Altiris Agent\AeXNSAgent.exe
76470746 (UnhandledExceptionFilter) : C:\Windows\system32\kernel32.dll
77DA7F02 (EtwReplyNotification) : C:\Windows\SYSTEM32\ntdll.dll
77D9374E (RtlInitializeExceptionChain) : C:\Windows\SYSTEM32\ntdll.dll
Altiris Agent version 7.1.8280.15280
With best regards
Sergey Kolomiets
TSS
Global Delivery Centre (GDC), RussiaFUJITSU
Sibirskiy trakt 34, Kazan, 420029, Russia
Email: Sergey.Kolomiets at ts.fujitsu.com
Web: ru.fujitsu.com