List of Values (dynamic parameter) times out once and then works.

Question

Hello.  First time posting here.  I'm having a strange (yet very predictable) issue with Crystals Reports List of Values.  The List of Values is used on a dynamic cascading prompt and is published to the BO XI R2 repository.  The prompt/list works fine when using Crystal Reports thick client, but when using the Crystal Reports viewer from InfoView the following happens everytime:
1.  Any Report that uses the Parameter/LOV is launched.
2.  After about 1-2 minutes, the viewer returns a "Timeout" error message.
3.  The report is launched a 2nd time.
4.  The parameters/LOVs display (takes about 8 seconds) and the report runs fine.
Then anytime a report is run within a certain period of time it works ok.  But if no one runs a report for an extended period of time (i'm not sure how long, but it's on the order of maybe 30 mins.. to an hour), then it starts all over again.  In addition, if I restart the services/server this same thing will immediately occur.  (time out once, but work after that for a period of time).
I initially did not schedule the LOV to get generated on the server and left it so that it's done in real-time when the report ran.  But then when I ran into this error, I tried scheduling it every 10 minutes or so, but the error continues to happen.
I also restarted the server/etc to no avail. 
I saw another post on here that was kind of similar and that suggested that starting the LOV services as a domain user (that had admin rights on the BO server) helped him.  I tried this as well and restarted everything but that didn't fix my issue.
Any help would be greatly appreciated!
Scott

Answer 1

Just wanted to update this.
Because I use Business Objects OEM, I didn't have direct support with SAP/Business Objects.  However, because of this issue (and other issues) we purchased Business Objects Edge 3.0.
After getting BOE 3 installed/configured, I migrated those reports and underlying Business Views over.
And guess what?   The problem still occurred on the new platform.
I then created a support incident and the person that initially tried to help me couldn't figure out what was going on.
However, during that time, I did try re-creating the report using a newer version of Crystal (Crystal 2008) and the problem went away.  (note, I didn't recreate the business views.. just the reports).
So bottom line:
I created all reports from scratch instead of using the reports that I migrated from BO XI R2/CR XI and no longer had the problem.
The techs never figured out the exact cause of the issue.
So far, my experience with their support has been the same on all incidents.  They don't seem to be trained (at least at the 1st level) for actually using the debug/logs/etc to help quickly pinpoint/analyze issues.  They do basically like I do (the end user) and smartly poke around and do trail/error.  I have yet to get a support tech that knew the exact nature of my issue and could solve it without this kind of trial/error approach.