Acrobat Connect Pro LMS 7.5 server cache issue - displaying old content

Question

Our Adobe Acrobat Connect Pro server is showing old Captivate-created content from about 4-6 weeks ago.
I loaded 35+ sets of Captivate 3 (SCORM 1.2, HTML, zipped) content onto our Acrobat Connect Pro LMS about 6 weeks ago.
I converted all training content from Captivate 3.0.1 to 4.0.1, 4 weeks ago by opening each file in Captivate 4 and following prompts to "Save As" new files with different file names.
I reloaded all content 4 weeks ago, and again 2 weeks ago.
I reloaded about half of all content again last week.
End User Acceptance testing performed this week showed that most of the courses are showing old content, ranging from 2-6 weeks old
Attempted fixes and workarounds:
Deleting content entirely and reloaded from scratch - this will not work long term, as we lose usage data each time we reload completely new files.
Contacted Adobe, provided times to track incidents of the issue.  We reached Tier 2 - who told us it was our problem and that everything appeared to be working fine from their side.
New workaround - load new content and reattach course to new content.  This presents the same long term issue as the first workaround, but enables us to retain older versions of content in the system, should we need to revert or report on it.
Gaining server side access is a bit challenging due to the hosting situation we have, so I am looking (ideally) for a solution that can be performed from the Administrator/Author Frontend.  However, I want to learn the real cause of the problem, wherever it might reside, so that it can be properly corrected and avoided in the future.  I am calling this a server cache issue, as it seems the server has somewhere retained unwanted old versions of content, preventing current content from being displayed to end users.  Viewing content as an end user = see old content.  Viewing content from the Content area (Author view) shows the current files, so I know they are on the server and are loading correctly, up to a point.
I am preparing all content for another round of loading/reloading due to other issues and updates, so republishing and reloading all 35+ files into the LMS is unavoidable at this point.
This issue is keeping our LMS from launching to several thousand users across the country, so any suggestions or helpful tips are much appreciated.

Answer 1

I think I have isolated the source of this problem. It's the Pitstop Professional 9 plug in. I un-installed this, and everything opens quicker than greased lightning. I re-installed it and it's back to slowsville.
Unfortunately Pitstop is essential to my workflow.
Until recently I did my pre-press on a Mac G5 with Acrobat Pro 7 and Pitstop 6.5. I never had this problem with slow file opening. But it seems that the delays would occur when I used the plug-in with large complex files.. So it would open files as fast as you'd expect from an elderly machine. But starting to use Pitstop would result in a prolonged period of staring at a spinning beachball.
I wonder is there any way to stop the Pitstop plug-in from initializing until it is used? So the plug-in stays inert until you select the tool from from the menus.