Solution : https://service.sap.com/sap/support/notes/659466 (SAP Service marketplace login required)
Key words : 
terms record_backend reason, record back end, record contents, symptom occasionally, read correctly, solution test, prerequisites
Related Notes : 
       
| 696262 | CRM 4.0 SP Stack 1/2004 (SAPKU40004): Release & Info. Note | 
| 677456 | SAPKU40003: Support Package 03 for CRM 4.0 |