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An unhandled win32 exception occurred in w3wp.exe event 1023 NET Runtime version 2.0.50727.4206

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Last Modified: 2012-05-11
Server 2008 Standard x64 SP2
sqlserver 2008 X64
.net framework 3.5
IIS7

server console offten show error. it's a .net website(www.51yunli.com) error.
The error happen several times a day. but sometimes it happend more than 10 times in one hour.

when error happen this website app pool will be rebooted.
mostly w3wp.exe cost about 700M memory, peak memory cost about 1.2G

An unhandled win32 exception occurred in w3wp.exe

eventlog
event 1023,.NET Runtime
NET Runtime version 2.0.50727.4206 -

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