With my experience, I’ve seen numerous number of scenarios for entire server hangs which is due to high Non-Paged pool memory. One thing which stands out in any of scenarios is /3GB switch enabled in c:/boot.ini file
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Few of the users started complaining that they are not able to use download/export functionality from the Aspx pages. They are getting following error

Unable to download [More]

What is the Handles? huh
From the application (user mode) perspective handles are the reference to the kernel mode objects(device/registry/token/event/file).It does not have the semantics of a programming reference but what it does do is allow the system resources to know what you are referring to when it is passed in an API call.They are 32 bit unsigned values that the Windows OS owns.
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Based on my own experience following are the different ways which would trigger flushing of Kernel mode cache


1) Time to live: Set by Expire Header or Time set through cache time policy
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I was trying to delete one of module named as CustomErrorModule for Default Web Site and immediate I was notified with this nice error. [More]

Asmx Post request fails with 'HTTP 400' status code under the following circumstances :



When the size of the string parameter passed from the client application (Content-Length)> 1024 Bytes and the file is set for either 'integrated' or 'basic' auth.



Request goes like this Client (exe) -> Web service (asmx) hosted on IIS
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Helping one of mate in our team with issue where Asp.net application was failing with System.Security when contents were pointing to UNC path.We were getting following error in the browse:



Parser Error Message: Request for the permission of type 'System.Web.AspNetHostingPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed. (\\abc02\myapp\web.config line 84)
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With respect to MS11-100 generally people ask how to check if my servers are vulnerable or we have 1000+ servers how to detect if IIS and ASP.NET is installed. [More]

Recently Microsoft released security advisory[MS11-100] affecting ASP.Net. Following post would provide you full insight into the topic. [More]