Trouble: HD "Data Lost," DiskWarrior stumped, then a "Clean Install"

Hello Classic Fans,
Since installing OS 9.1 on my 1998 WallStreet PowerBook on 25 April 2005, I enjoyed a PERFECT computer until 3 days ago (16 Feb. 2006) when my Mac started badly acting up.
I'll chart what happened and what I did to correct the problem in the hope it may help others. I would also appreciate feedback telling me if what I did was correct and if there's anything else I should do. Since I'm just now back up and running I'm not sure the problem is gone.
Sequence of Events:
16 Feb: While surfing in InternetExplorer 5.1.7 the program quit then the display froze. Ran DiskWarrior (5% out) and installed fresh copy of I.E. I had not had a freeze for many moons!
17 Feb: Got "Data Lost" on HD error message twice. Ran DiskWarrior again (5% out).
Backed up recent important "Documents" stuff to CD.
(Note: From past experience I knew that the HD "Data Lost" error means certain trouble).
18 Feb: It's back! Got HD "Data Lost" right away. This time the error box kept flashing and dinging like nuts and wouldn't stop.
Forced restart.
Flashing "Question Mark" appeared (HD can't recognize its own "System" software!)
Booted to Zip Rescue Disk with DiskWarrior on it.
DiskWarrior can't see HardDrive -- none of my normal desktop icons appear either.
Shut down with Power Button.
Tried to start/boot to HD ("System" folder) using Power Button.
This time HD recognized its "System" folder and started normally! (How come it could normally boot this time but not last time?)
Restarted to the Boot Rescue Zip. This time DiskWarrior COULD see HD, so I ran DiskWarrior (1% out) on the HD and successfully rebuild Directory.
Almost certain now that something was wrong more than DiskWarrior could fix (I had run DiskWarrior twice in 2 days and the problem was still there and getting worse), I consulted the Apple TroubleShooting guide and decided to do a "Clean Install" of OS 9.1 before I lost EVERYTHING on my HD (that dire event happened before!)
Did "Clean Install" of OS 9.1.
Moved the following folders from the "Previous System" suitcase to the new clean install "System" Suitcase: Control Panels, Extensions, Favorites, Apple Menu Items, Startup Items, and Preferences.
After doing that stuff and a restart, my desktop now looks the same as it did before the Clean Install and my applications, etc. are working like they did before too.
Is the problem fixed? I don't know yet. But from past experience I do know that once the HD "Data Lost" error starts appearing bad stuff starts happening really fast.
Als: Since installing OS 9.1 nearly a year ago, I have never rebuilt the desktop or reblessed anything. Was that a mistake? But this PowerBook just ran PERFECT better than when brand new!
Until 3 days ago....then BANG!
Did I follow the correct procedure? Any other suggestions for this eight year old PowerBook to keep it alive?
Thanks and I hope this helps others....
Wallstreet G3 Powerbook Series (1998) Mac OS 9.1.x 233 Hz; 20 GB HD (16 GB free); 288 RAM:

I have no expierence using a zip disk. I have always ran DW directly from the CD. Therefore, unknown if it would have made a difference.
The reason why IE froze could have been because it needed more preferred memory. The newer version needs approximately 300%.
If you were looking at a flash type site, those take up a lot of memory & can cause freezes if your browser does not have enough preferred memory.
Then again, you could have had directory damage. 5% is not much. You could have run Disk First Aid directly from your System Install CD that originally came w/your computer. Whatever, DFA can't repair, then that is when you pull out the heavy artillary (DiskWarrior, etc.).
I would just leave sleeping dogs lie for right now if your computer is running smoothly again.
I would also do a monthly maintenance by running DW & Plus Optimizor.
Rebuild your desktop after updating/upgrading an OS, running a 3rd party utility like DW, downloading & installations.
You really need a backup browser. The following is from Microsoft's website:
"Microsoft ended support for Internet Explorer for Mac on December 31st, 2005, and is not providing any further security or performance updates. As of January 31st, 2006, Internet Explorer for the Mac is no longer available for download from Microsoft."
Alternative OS 9.x Browsers:
Mozilla v1.3.1(Wamcom)
Netscape Browser Archive
Netscape v7.0.2
MacUpdate-NC v7.0.2
iCab v3
Opera v6.0.3

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