Re: NSTask waitForDataInBackgroundAndNotify and waitUntilExit

FROM : Shawn Erickson
DATE : Mon May 12 23:04:22 2008

Your placement of waitUntilExit is blocking the runloop which needs to
be running to service the background notifications you requested. If
you want async behavior then you cannot wait on the task (at least not
in the way you are currently attempting).

Review the following code example...

http://developer.apple.com/samplecode/Moriarity/listing5.html

-Shawn