On iMac 24" Mac OS X 10.4.9, when Parallels 1940 or 3188 is installed (but closed) the write performace to an AppleShare server is 3.3MByte/sec on 100mbps ethernet. After unistall Parallels, the write performance return to 9.8MByte/sec (tested with HELIOS LanTest). Read perfomance is OK (9.8-9.9MByte/sec).
Please go in Mac "Applications"->"Utilities"->"Terminal" and write sudo /Library/StartupItems/Parallels/Parallels stop Is it change AppleShare server perfomance?
No change at all. The command succesfully unload 4 kexts, but AppleShare server performance did not change. Performance return normal after Parallels Uninstall only.