Redmond is still running low on Joe the plumbers as another Windows 7 leak surfaces today. This time around it's the second RTM branch build to leak, 7127. Approximately a month after 7106 leaked. The build string is 7127.0.090507-1820 meaning it was compiled just over a week ago so it's still fresh off the blocks. Microsoft is progressing steadily with the RTM branch and company insiders have indicated the software giant is well on target to finalise the RTM build over the summer.  Microsoft is expected to announce general availability of Windows 7 for before the Christmas period, cashing in on holiday PC purchasers.