Error on webi schedules on HPUX environment - XI 3.1

Question

Getting this error when scheduling a webi report:
Error Message: Could not save the document to the repository for the following reason: [repo_proxy 30] DocumentFacade::uploadBlob - Query execute has failed : Error occurred while attempting to reconnect to CMS : Not a valid logon token. (FWB 00003) (hr=#0x80042a70) (WIS 30567) 
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Title: Test for Scheduling 
Document Type: Web Intelligence Report 
Status Failed 
Destination: Default 
Owner: Administrator 
Creation Time: 5/28/2010 7:33 AM 
Start Time: 5/28/2010 7:33 AM 
End Time: 5/28/2010 7:33 AM 
Server Used: sia_MACHINE.WebIJobServer2 
PID:  20241 
Parent Object Path: Tesla/ 
Remote Instance in Federated Cluster: No 
Expiry: 5/28/2010 7:40 AM 
Formats: Web Intelligence 
Parameters: 
Error Message: Could not save the document to the repository for the following reason: [repo_proxy 30] DocumentFacade::uploadBlob - Query execute has failed : Error occurred while attempting to reconnect to CMS : Not a valid logon token. (FWB 00003) (hr=#0x80042a70) (WIS 30567) 
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System Information
XI 3.1 SP2; FP 2.6
SAP IK XI 3.2 SP2 FP 2.6
HP64
Tomcat55
single server

Answer 1

As per SAP Note - 1432731, this issue is targeted to be fixed in SP5.  The proposed workaround is:
- restart  CMS, then the Adaptive Job Server(s) and WebI Processing Server(s).
For some Production environment that may be an issue.
However, I also tested following workaround which seemed to have worked:
1. launched the Instance Manager and checked how many Pending instances objects were displayed for a single report.  
There were too many (about 1,595)
2. Used the Query Builder and delete those Pending instances
Having applied this workaround, most of recurring reports completed successfully.