Empty System Cache... What Happens?

So I kinda goofed up (I think).
I was using the Application "Mainmenu" to repair permissions before installing the newest iTunes & iPhoto update. I inadvertently clicked on "Empty System Cache" instead of "Repair Permissions". Realized it about a mili-second after. I wasn't sure what that actually DOES, but afterwards a few of my desktop icons were now blank otherwise everything seemed fine.
That is UNTIL I launched Safari. I have a dual-monitor set-up and usually have Firefox running on the Left display and Safari on the Right. When I went to launch Safari, it no longer remembered where it was supposed to go & I was also UNABLE to put it there (Full-Screen on Right monitor). It doesn't seem to want to stay there anymore. It laps over to the Left monitor a bit. I try & drag it back where I like it and it just slides back. Any ideas?
Dual 2.3 G5 with 4.5GB Ram Mac OS X (10.4.9)

Hi, GregM.
Your questions are answered in Disk Utility Help, specifically:
• "Disk Utility 10.5 Help: Protecting your data against hardware failure with a mirrored RAID set."
• "Disk Utility 10.5 Help: A disk in a RAID set has failed or is missing."
FWIW and IMO, unless one is running a high-volume transaction server with a 99.999% ("Five Nines") availability requirement, RAID is overkill. For example, unless you're running a bank, a brokerage, or a major e-commerce site, you're probably spending sums of time and money with RAID that could be applied elsewhere.
For the average user, RAID is high on the "geek chic" scale, low on the practicality scale, and very high on the "complex to troubleshoot" scale when problems arise. The average user is better served by implementing a comprehensive Backup and Recovery solution and using it regularly.
Good luck!
Dr. Smoke
Author: Troubleshooting Mac® OS X
Note: The information provided in the link(s) above is freely available. However, because I own The X Lab™, a commercial Web site to which some of these links point, the Apple Discussions Terms of Use require I include the following disclosure statement with this post:
I may receive some form of compensation, financial or otherwise, from my recommendation or link.

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