So far, so good!
I ran it, & it patched my OS, I rebooted, & NO PROBLEMS!
* So far, looks to be alright!
P.S.=> The mouse I use, in case anybody else does as well & is wondering if this will work w/ THEIR mouse, is:
Microsoft Intellimouse Explorer 3.0 USB/PS2 (lasermouse/optical) type
I went from 250mhz, to 500mhz thusfar, no trouble!