This bug has been copied from bug #606238 and has been proposed to be backported to 5.5 z-stream (EUS).
Bug could not reproduce with kvm-83-164.el5_5.21 Move to VERIFIED
Technical note added. If any revisions are required, please edit the "Technical Notes" field accordingly. All revisions will be proofread by the Engineering Content Services team. New Contents: When attempting to transfer a file between two guests that were joined in the same virtual LAN (VLAN), the receiving guest unexpectedly quit. With this update, the transfer completes successfully.
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2010-0627.html
*** Bug 606264 has been marked as a duplicate of this bug. ***