Windows 7 build 6519

{{BuildInfo
 * buildtag = 6.1.6519.1.winmain.071220-1525
 * arch = x86, x64
 * sku = Business Business N Home Basic Home Basic N Home Premium Starter Ultimate
 * bios = 2007-12-21
 * timebomb = 2009-07-01 (+138 days)
 * rivals = {{Rivals|TCB=http://www.thecollectionbook.info/builds/windows/build/374|TCBGallery=http://www.thecollectionbook.info/gallery/?f=/windows/nt%20kernel/windows%207/6.1.6519.1/english/ultimate/x86}}