I am seeing the same issue with our site, only we are running SS 9.3.5409 and our web server is Apache.  Like the user above, we don't see the double slashes in the actual log files.  One thing we have in common is that we are running a wordpress site as well.

 

Did you find any resolution to this?  I am thinking of re-processing the logs as a first step.  

This has been fixed in the 10.x minor coming Thursday.  Take the following sample hits from a log:

 

/path1/

/path1

 

Stats actually imports those as separate pieces of traffic (which technically they could be).  To make it more readable, we throw a slash at the end of hits that don't have extensions on them, but the bug is that it wasn't already checking to see if the slash existed.  So before, it was showing like this in reports:

 

/path1//

/path1/

 

After the fix, these are consolidated into one row:

 

/path1/