1. PRAM battery will cause the date and time settings to be lost when the mini is powered down
2. The crashing can be caused by a corrupt OS.
3. Slow boots and shutdowns can be caused by a faulty hard drive and corrupt OS
What to do?
The battery can be easily replaced but the mini is not the easiest thing in the world to get into. It requires the use of a Putty knife (Scraper). If you feel up to the task there are a number of places around the internet that will show you how.
The corrupt OS can be replaced by using the OS X installation disk. Booting from it and choosing the Archive and Install option. This will keep your data intact and place a new copy of the OS onto the drive.
Before you go there, boot from the installation disk and run the Disk Utility that you will find on there.
Choose the Repair Disk option and then run Repair Disk Permissions.
Reboot normally and see if you still have the problems. If yes, Archive and Install.
Good Luck, let us know how you get on
I am using Mac 0S X Leopard, mac mini and facing the following problem:
1) System is taking too long time(10 - 15 min ) for start up and shut down.
2) It is asking every time to set up the current time as and when the system starts every time.
3) When accesing the system preferences , it gets crashed when using index Spotlight.
4) Finder gets relaunched itself for every 60-90 seconds when accessing folder Applications or Utilities etc..
5) The Spotlight is indexing itself, When i tried to stop the indexing of the spotlight using system preference, it gets crashed.
My system got its logic board replaced by the apple once.
When I googled over the net , I found some problems may be due to DEAD PRAM Battery.
Does the system getting slowed down and crashed would be due to the DEAD PRAM Battery.