Cannot install Adobe CS3

Hi, everybody,

I hope somebody can help me here, as for 2.5 weeks now I am trying to install Adobe's CS3 Design Premium and I can't get it to work. Adobe's tech support is very friendly and comes with solutions and things to try now and then but first response time is really slow (48h) and secondly they haven't found a solution yet, though being escalated up in Tech Support levels already.

Problem:
Can't install CS3 (English version), Design Premium

Platform:
WinXP Professional SP2 2002 (all patches) US
Intel Pentium M 1.7 GHz
1.5 GB RAM
C:, D: Partition
On C: still 25 GB available
Computer is in domain.
Have tried to install it as local Admin and Domain-User (who is also in local Admin group with all rights).
Furthermore CS2 is installed, Macromedia, Office products etc.

Details:
1. Can start installer, all screens are accessible, can make entries everywhere.
2. Installation starts and progress bar appears.
3. Installers runs to the end (without any problem), summary screen comes.
4. Summary says that some products could not be installed.
5. Installer installed the "smaller" apps, like Acrobat, Device Central, Bridge etc. BUT NOT Flash, Photoshop, Illustrator etc.

Side effect is that, as Acrobat and Distiller cannot be activated by itself, I cannot use them anymore and the CS3 installer does remove these two CS2 products. Well, working with Reader currently :-(

Also, the numerous uninstallations (45 min!) remove also PDF plug-ins and Flash plug-ins, so a terrible situation to be in.

What I have tried so far (and which hasn't worked):
1. Ran CHKDSK over the hard disks, no issues.
2. Installed from hard disk (instead DVD).
3. Disabled all services and startups, as well as firewalls, virus scanners etc.
4. Let the cs3clean script run (provided by Adobe, which resolves problems if you had CS3 beta installed, which I didn't), with level 1 and 2.
5. Tried to install only specific applications (not all).
6. Ran MSCLeanup app.
7. Analyzed CS3 Install log for FAILED, Error Code 3 etc., no dramatic entries. Only thing that sometimes appears:
- Error 1303, not enough privileges for CONFIG.MSI, which seems to be a known MS issue when the hard disk responds too late. Of course privileges for CONFIG.MSI are there, also tried reapplying them, deleting folder etc.
8. Applied privileges new to all folders.
9. Ran a registry cleaner
10. Deinstalled Bridge 1.0

More:
Adobe tech support also suggested to uninstall Bonjour, but I cannot find any entry and therefore have no idea how to uninstall. Add/Remove programs doesn't list it.

As the Installer runs about one hour, it is not only time-consuming, it also kills my productivity, as no Browser, Adobe or MS product can run when the installer is running.

Googled for error 1303 and CONFIG.MSI similar problems. Found numerous entries with CS3 installation issues, with some the CS3 Beta clean script helped, others had success with copying installation folder to hard disk, everybody something else (or no solution). And nothing that helped me.

Anybody any idea what I could try (except giving back CS3, which I obviously want to avoid)?

Thanks
Matthias