Solution : https://service.sap.com/sap/support/notes/655528 (SAP Service marketplace login required)
Key words : 
1 content            import support package 10, 0b            import support package 34, 1c            import support package 26, 0b            import support package 16, 1 content support package 10, 0b support package 34, 1c support package 26, 0b support package 16, bw system release, bw support packages
Related Notes : 
       
| 647855 | Correction: Deadlocks during load processes | 
| 633981 | Correction: BAPI_ISREQUEST_GETSTATUS does not lock | 
| 571744 | SAPBWNews BW 3.1 Content Support Package 10 | 
| 571720 | SAPBWNews BW 3.1 Content Support Package 09 | 
| 571699 | SAPBWNews BW 3.0B Support Package 16 | 
| 571698 | SAPBWNews BW 3.0B Support Package 15 | 
| 523207 | SAPBWNews BW 2.1C Support Package 26 | 
| 523194 | SAPBWNews BW 2.0B Support Package 34 |