Solution : https://service.sap.com/sap/support/notes/708621 (SAP Service marketplace login required)
Key words : 
symptom program errors, client server technology, terms disp+work, standalone enqueue server, log 'g' release 4, asynchronous rfc server, astat files corrupt, icm patch collection, icm patch collection 6, sap web dispatcher
Related Notes : 
       
| 709054 | |
| 698017 | ICM Patch Collection (6.40) | 
| 693917 | |
| 663190 | |
| 642340 | |
| 508300 | ICM Patch Collection (Release 6.20) |