lsass.exe continuously reading and writing disk

[SmokiN]

Hi friends,
Recently i noticed that lsass.exe reading and writing my hard disk in sequence.but am confused.i would like to know is this is normal?when i scrutinized my Task Manager it showed 3 I/O reads and 3 I/O writes about every second.but somebody told me that there is a virus isass.exe and this definitely is Lsass.exe. am frustrated what's wrong??

any help should be greatly appreciated..
thanks

[Steve123]

what all you gets when you done the following this on your computer.put the folder in un hide manner and search in C:\Documents and Settings\(User Name)\examine the file size of ntuser.dat.LOG.did you notice any changes in size just watch it from Windows Explorer getting an error on right-clicking in order to see the files?
>Are you with an Logitech hardware? or have any HP hardware?

>Did you install any of the MS Office 2007 suites

>Have you ever run RegCure, PC Pitstop Optimize or TuneUp RegistryCleaner?

[Shen]

Look around SysInternals for the Filemon, Regmon and ProcessMonitor utilities that Microsoft has referred me to and that we will be using to troubleshoot this problem.try to disable the service and rebooting (the only way to stop it AFAIK)

[Big Fish]

Anyway it is on my machine randomly pops up IE windows. That is the only
symptom that I noted ever other than the permanent disk IO from lsass.exe.me disabled the Windows Security service which possibly using lsass.exe, how ver the process is still begun at reboot.so tried to remove the file from winnt/system32 and now it is working cool