I have uninstalled an older version of ZA, then clean.exe, then install ZA free 12. Every time WinXP SP3 boots up, it slows down the process by 1-2 minutes. After uninstalling, the boot process runs faster by about 2 minutes. Since I have reinstalled ZA free, it hangs up in the boot process, then, after 1-2 minutes, it continues normally, and WinXP runs normally. Is there any way to run a program to find out what doas ZA that hans up WinXP boot process?