Problem ejecting usb mass storage device

WD External Drives External Drives for Mac
3

WD KB 274 : http://wdc.custhelp.com/cgi-bin/wdc.cfg/php/enduser/std_adp.php?p_faqid=274&p_created=1023392680&p_sid=zpcMeaRj&p_accessibility=0&p_redirect=&p_srch=1&p_lva=&p_sp=cF9zcmNoPTEmcF9zb3J0X2J5PSZwX2dyaWRzb3J0PSZwX3Jvd19jbnQ9MTcyLDE3MiZwX3Byb2RzPSZwX2NhdHM9JnBfcHY9JnBfY3Y9JnBfcGFnZT0xJnBfc2VhcmNoX3RleHQ9c2FmZWx5IHJlbW92ZQ!!&p_li=&p_topview=1

or microsoft KB http://support.microsoft.com/kb/555665 may be better solution for your problem , specialy if it’s windows XP