ANONYMOUS  I can't help you with only this information. You can start checking the Console output when the menu bar crash. Send me this log and your system configuration (OS and Hardware).

You will find my mail in the read me file.  
(Version 1.3.1)

ANONYMOUS  It was tested with Powerbook, iBook or iMac G5. I don't know if it work for powermac g5, but you can try it and post your results here.  
(Version 1.3.1)

ANONYMOUS  Ummmmm, yeah and....

This is a free utility that allows you to do it without going into the system prefs. It is a menu extra item and makes it quicker and easier to do. It even states in the documentation that you can do this in the system prefs, but who cares. It is just a short cut to doing it in the menu bar instead of opening sys prefs.  
(Version 1.3)

AMAKE  To anonymous: If you actually read what the original poster wrote, he said you can do it from the energy saver menu item. That is not the same as going into System Preferences, and is much faster and convenient. He's right--on Tiger, FastAndSlow doesn't add anything worthwhile.  
(Version 1.3)

ANONYMOUS  Where did he say you can do this in the Energy Saver Menu Extra? He said the drop down menu...

That is not the same either. You can switch between all the options using this, not just the two that apple offers. The two that Apple offers are not cusotmizable either. Neither of the options from the Energy Saver menu extra item allow you to set the processor to slow or reduced. Better energy savings setting, puts the processor in Automatic setting.

It would be nice if you understood how they both work before posting an uneducated guess on both.  
(Version 1.3.1)

ANONYMOUS  Ooo. So much anger. So much confusion. Just because the first poster didn't mention Battery "Menu Extra" and just said "drop-down menu" he's evil and stupid. Come on, folks. Lighten up a bit.

Try to figure out what he meant before flaming. The Battery "Menu Extra" drop-down menu gives you gives you access to four settings: Better Battery Life, Normal, Better Performance, and Custom, which is your custom setting from the Battery Preference pane (should "pane" have been capitalized? Oh no, I must be evil and a moron if I got the capitalization wrong!).

Let's see, that makes 4 settings. How many does this little program have? Looks like two from the description. Does it have 10 or 12? Are that many necessary for anything?

Reinventing the wheel probably isn't worthwhile if it doesn't need to be.

That is all.  
(Version 1.3.1)

ANONYMOUS  How can you comment on reinventing the wheel when it is so obvious that you have never used the utility. It is really funny how there are so many opinions when it is obvious that you have not even used it. If you want to comment on the app, why don't you use it first.

If you don't think it is useful to you, then don't use it. Why is it that people feel that if they don't want to use it, then nobody will want to?  
(Version 1.3.1)

ANONYMOUS  Yes, it work with last official OS X release and all apple laptop that support power reduce.  
(Version 1.2.1)

ANONYMOUS  Non ho un iMac G5 su cui testarlo. Se vuoi puoi aiutarmi per capire cosa modificare. Se sei interessato scrivimi in mail. Ciao  
(Version 1.2.1)

ANONYMOUS  EGADS!!! English folks!  
(Version 1.2.1)

ANONYMOUS  works also for imac g5 please!  
(Version 1.2)

TIMOTHY  .........why?  
(Version 1.2.1)