Quick Launch Toolbar Icons Rearrange Themselves

Hello,

I have a windows XP (pro) machine with two user accounts.
I use Internet explorer 6. I have several shortcuts on
the quick launch toolbar. It used to be that once I
changed the order of the icons on the toolbar, the changes
remained in effect the next time I booted the machine.
However, something happened some time ago that caused the
icons to be automatically rearranged every time I log onto
the machine. I played with different arrangement
settings, but it all seems to revert back to the same
order once I reboot. This only happens to one user
account. The other user account still works fine. I
tried deleteing the toolbar completely and started from
scratch, but the same problem still exists.

Does anyone know how to resolve this?

Thanks,
Farid