Yes, I have done silent install with QTP 11. There is couple issues with the silent install process defined in the installed guide.

- If you are installing from network drive the silent install batch file has problem.
- Installing on 64 bit OS does not work and will throw an error.
- The silent installer batch file install QTP, Run Results viewer, HP Update tool, and runs QTP ''Additional Installation Requirements'' wizard. The ''Additional Installation Requirements'' has issue running silent commands.

Good news, HP does have a fix for all of the above issues. Request newer version of QTPSilentInstaller.bat and updated QTPInstallReqs.exe from you QTP support.