multiboot Windows ~ installing avast! in the default directory

I use a multiboot system (WinXP Pro & Win2K Pro). For both instances, I may install avast! pro ed. in the default ‘C:\Program Files\Alwil Software\Avast4\Setup’ directory. Will there be system instability if I do this?

I think so… Dual boot systems should use different partitions… otherwise, you’ll get trouble, really a lot of trouble…