i had a 500gb my passport drive it has gone faulty so i sent the drive to WD on 21st april 2012 … when called still the support guys says that it ll take 10-15 days…there are no updates on RMA status when i chked in WD website…usually how many days will it take for a replacement???
Depending in which country you are located the replacement may take up to three weeks: http://support.wdc.com/warranty/rmapost.asp?lang=en