So, they changed the paths of all downloads.
For example:
Old: http://download.splunk.com/releases/5.0.4/universalforwarder/linux/splunkforwarder-5.0.4-172409-linux-2.6-amd64.deb
New: http://download.splunk.com/products/universalforwarder/releases/5.0.4/linux/splunkforwarder-5.0.4-172409-linux-2.6-amd64.deb
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