F Y I upgrade to 10.5.8 on a G 4 -- late 2004 iBook

Question

The iBook G4 that i am using is listed below.
This puppy began at a OS of 10.3. ?, cannot remember the last number, could be 9.
before upgrade to 10.5 was at 10.4.11
Any way, after many weird ness`s i finally did a upgrade to 10.5 through the correct OS sequences.
At this time there is what appears green blotches across the window , not a lot of em, maybe 3 inches wide by 1 quarter tall, somewhere near the bottom right side at near the top, all setting horizontal.
something like when a person uses a paint, airbrush mode with spray pattern at medium in a graphics app. think Apple works 6.
I was in the assumption that Apple did no longer support 10.4, any OS below 10.5 was useless to Apple to support updates.
I often do software updates and there was 0 to be found even for any security.
among the weird ness`s , sometimes this machine will emit the rice crispy sounds, electronic sounds ?.
I sometimes go into Terminal and work with The Unix Programmer Environment, B K R.
I noticed that the ttys id was showing 002 and sometimes 001 in the same account.
while upgrading this puppy i first tried going strait into 10.5 in a upgrade CD.
I do, do insert current OS CD and run Disk Utility with maintenance and after updates.
With the 10.5 CD after the initial install , i went into update OS and when the message showed installing, i assumed the data was on the machine and unpluged the ethernet cord, and then the status bar just sat there. so then i just freaked out and every thing went down hill from there.
I went back and erased the whole song and dance and began over from 10.3.? and built each level with corresponding updates from the mother ship Apple.
Re installed 10.5 CD.
While doing the first update in 10.5 from Apple Server, the status bar just sat there as before, at 1 eighth of the whole bar with message of installing, this time i allowed the ethernet cord to remain plugged in and just waited to see what would happen.
After considerable time the system went through a few windows and morphed into its current state of being. i did a insert CD and did a Disk Utility Permissions check and repair as a usual procedure.
I am using the admin account and the tty shows 00, the rice crispy sounds are not in tune with the crickets. maybe i could look at Activity Monitor and see if there is a corelation with ? and the electronic sounds, could be the CPU grunting up a hill ? .
At some time with the weirdness in the past i presumed it could be related to a hack job and this puppy had a disease.
If there was a question: what is your experience with updating a iBook G4 to OS 10.5 and is there any filters that would show clear diagnostics of Hardware Software issues that are free.
I am not much of a geek, but it would be interesting to pin down the color blotch`s and electronic sounds.
thank you for your time.
Model Name: iBook G4
Model Identifier: PowerBook6,5
Processor Name: PowerPC G4 (1.2)
Processor Speed: 1.2 GHz
Number Of CPUs: 1
L2 Cache (per CPU): 512 KB
Memory: 1.25 GB
Bus Speed: 133 MHz
Boot ROM Version: 4.8.7f1
Hardware UUID: 00000000-0000-1000-8000-000D9361FEEA

Answer 1

i forgot to mention , that when i striped this machine back down to 10.3.7 and before i re built i did do a hardware check with the original install Disks [3] and every thing came back clean.
the weird ness with the colors on window, if i pass a app like text edit over the area , the color will not cover the app but stay in the background.
when i first saw this color thing i had the preference pane out and was moving it around on screen and the colors were bleeding off of the preference pane onto the screen.
if you have any idea as to what is going on here let me know.
thank you