g4-flo:
i installed my original install on stock card which is not airport as you know, and did not have that loop problem, i m not saying it is not related to airport (probably related as well) but when i didnt have 1490 card, it still didnt have any loop error at all

didnt check my older install for trackpad after 10.5.6 update but you can give old drivers a try... (appleacpi=appleapic=appleps2) these 3 drivers are for the kb/mouse/trackpad... also i never tried the alps trackpad beta driver either...
battery meter issue is probably related to the powermanagement bundle... if you installed previous packages, you probably have older patched pm bundle

if you upgraded to 10.5.6 and used previous 1.1 update files your original bundle may still be in place (system/library/systemconfiguration/powermanagement.bundle.orig)
if you know how to use terminal you can remove the pm bundle current one, and rename the .orig one to bundle (powermanagement.bundle)
it should fix the issue (i forgot the bundle issue

i may make a quick revision of the install files to reflect the bundle issue...)
also have you tried the dvd upgrade pack? another user said it is corrupt, which is possible because sometimes during upload process, things can get haywire... i will check it and see if it is true...

on the other hand, i m readying the 1.51 gb ppf for jas, for 10.5.6 integration without hassles...
paul:
for iso upgrade process: you said you have jas patched iso right? (jas+ppf=nc10 10.5.4 iso but file name should be still the same =JaS.OSx86.10.5.4.Client.Server.Intel.SSE2.SSE3.iso)
1) place the JaS.OSx86.10.5.4.Client.Server.Intel.SSE2.SSE3.iso (if you didnt rename the ppf added jas) to your root (root is the top level , like in windows C:\JaS.OSx86.10.5.4.Client.Server.Intel.SSE2.SSE3.iso, in osx if you named partitions same as in the previous guide, open finder click on the osx1 name and on the right side you should see files/folders, like system, library, applications etc... that place is root, just drop the iso there among the folders, but not inside any folder!!!)
2) place the combo 10.5.6 update in the same place as above: root!!!
3) run the dvd upgrade installer, step1 and step 3 are choosen, dont touch them, in step 2, choose sub option under dvd iso update/nc10 10.5.4 to nc10 10.5.6 option only... DONT JUST CHOOSE DVD ISO because it will select all sub options==> 10.5.5 iso to 10.5.6, 10.5.4 jas to 10.5.6, 10.5.4 nc10 to 10.5.6<=== three option!! will give you error!! only choose one sub option under dvd iso)
at the end, it should spit out samsung-nc10-10.5.6.iso in the root (meaning it will update the JaS.OSx86.10.5.4.Client.Server.Intel.SSE2.SSE3.iso t 10.5.6 and rename it samsung-nc10-10.5.6.iso)
and yes you will destroy all previous partitioning for better structure... clean install!
clear?
blade: i will check the package, it is possible that it may be corrupted in the upload process, what kind of error are you getting?
original jas iso name: JaS.OSx86.10.5.4.Client.Server.Intel.SSE2.SSE3.iso
ppf added jas iso name:JaS.OSx86.10.5.4.Client.Server.Intel.SSE2.SSE3.iso
meaning they are same, only 10.5.5 nc10 upgrade was renamed to something else

rt91: when you press the mac os x option, press the f8 button so quickly (in split second = like half a second or less, this issue is caused by missing counter i think, i never checked boot.plist before to edit

sorry i think original jas had it, so this is caried forward i think)
just press the f8 key as quick as possible after the mac os x selection it will bring the options