Slacko 5.5 included Firefox 19 which came with a built in PDF reader which simply worked without any need for the user to enable it.
Slacko 5.6 includes Firefox 17.0.8 which appears to lack a built in PDF reader and I have been unable to track down an add-on PDF reader.
This is important to me. I have chosen to continue with Slacko 5.5 as a consequence until I can add a PDF reader or discover the trick for making a built in one work.
Firefox 17.0.8 - no obvious built in PDF reader
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