What is /net used for in OS X?

I ask because canon (Digital Photo Professional) DPP hangs for a while while it lstat's /net. I don't particularly want to implement the workaround discussed in this link: http://luminous-landscape.com/forum/index.php?s=0f16e1b119e7e3b03bd84969919a4e32 &showtopic=23582&pid=187194&st=0&#
Destroying properties, reinstalling app, upgrading app have not helped.
From my system:
monkey $ cat /etc/auto_master
# Automounter master map
+auto_master # Use directory service
/net -hosts -nobrowse,nosuid
/home auto_home -nobrowse
/Network/Servers -fstab
/- -static
monkey $ mount | grep net
map -hosts on /net (autofs, automounted)
monkey $ df
Filesystem 512-blocks Used Available Capacity Mounted on
/dev/disk1s2 976101344 515170696 460418648 53% /
devfs 220 220 0 100% /dev
fdesc 2 2 0 100% /dev
/dev/disk3s2 1464477344 1069201144 395276200 74% /Volumes/pdisk4
/dev/disk2s2 1464477344 1081259016 383218328 74% /Volumes/pdisk3
/dev/disk0s2 976101344 540829384 435271960 56% /Volumes/pdisk2
map -hosts 0 0 0 100% /net
map auto_home 0 0 0 100% /home

/net is built into the automounter in OS X and uses the special map -hosts. This built in map will consist of the exports from the named server, when that server is accessed via the /net path. For example, if I have an NFS server at the IP address 192.168.1.10 and it exports a directory /exports, then if I do this from my Mac:
prompt$ cd /net/192.168.1.10/exports
the Mac automounter will contact the server, mount the export, and put me in that directory. All without me having to issue any "mount" command.
I haven't really read that other thread, but what's likely happening is that since your app is trying to stat something on an NFS server (since it's trying to go down the /net path), you are either hanging trying to resolve the server's name, or it's hanging because the server is not responding. Normally, if an application tries to go down the /net path using the name of a server that doesn't exist, or the name of machine that is not exporting anything over NFS, the command (e.g. lstat) will fail almost immediately.
Your problem may not be with the Mac, but with the application itself. If you can figure out what your application is stat'ing, you could then run a simple test from your command line to see if a regular stat (using "ls -l" or the "stat" command) also hangs. You can use the "dtruss" command from the command line to trace your application. (Note that dtruss may only be there if you have the development tools installed, I'm not sure).
If it is your app, your best bet may just be to comment out the /net entry in your auto_master file...

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