Update entry "How do anti-virus programs like Cygwin?",
adding bit about performance hit and exempting C:\cygwin\bin from scanning.
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		| @@ -346,16 +346,24 @@ things you might add in the future?) | |||||||
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| @subsection How do anti-virus programs like Cygwin? | @subsection How do anti-virus programs like Cygwin? | ||||||
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| Users have reported that McAfee (now NAI) VirusScan for NT (and others?) is | Users have reported that NAI (formerly McAfee) VirusScan for NT (and | ||||||
| incompatible with Cygwin.  This is because it tries to scan the | others?) is incompatible with Cygwin.  This is because it tries to scan | ||||||
| newly loaded shared memory in the cygwin.dll, which can cause fork()s | the newly loaded shared memory in cygwin1.dll, which can cause fork() to | ||||||
| to fail, wreaking havoc on many of the tools. | fail, wreaking havoc on many of the tools.  (It is not confirmed that | ||||||
|  | this is still a problem, however.) | ||||||
|  |  | ||||||
| There are also reports of NAI VirusScan causing the system to hang when | There have been several reports of NAI VirusScan causing the system to | ||||||
| unpacking tar.gz archives.  This is surely a bug in VirusScan, and | hang when unpacking tar.gz archives.  This is surely a bug in VirusScan, | ||||||
| should be reported to NAI.  The only workaround is to disable VirusScan | and should be reported to NAI.  The only workaround is to disable | ||||||
| when accessing these files.  This can be an issue during setup, and is | VirusScan when accessing these files.  This can be an issue during | ||||||
| discussed in that FAQ entry. | setup, and is discussed in that FAQ entry. | ||||||
|  |  | ||||||
|  | Some users report a significant performance hit using Cygwin when their | ||||||
|  | anti-virus software is enabled.  Rather than disable the anti-virus | ||||||
|  | software completely, it may be possible to specify directories whose | ||||||
|  | contents are exempt from scanning.  In a default installation, this | ||||||
|  | would be @samp{@code{C:\cygwin\bin}}.  Obviously, this could be | ||||||
|  | exploited by a hostile non-Cygwin program, so do this at your own risk. | ||||||
|  |  | ||||||
| @subsection Why can't I run bash as a shell under NT Emacs? | @subsection Why can't I run bash as a shell under NT Emacs? | ||||||
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