CS5 "a problem occured while extracting some files...."

Question

I used both Firefox and IE to download the update for CS5. All seemed to successfully download to my desktop where I wanted them. When I double clicked on the .exe file, it began to extract and got to 99% (sometimes 100%) before giving me the error "A problem occured while extracting some files. Check availabile space on your computer and the write privilages on the destination folder."
I am using Windows XP, I'm the admin so I'm not sure what privilages I need.
I have 66 G of free space
*I tried using 7zip to extract the files, did not work.
*I tried to just get into the folder which was created during the extract and clicked on set-up.exe - it gave me the message "We've encountered the following issues: Installer failed to initialize. File not found. Please download Adobe Support Advisor to detect the problem." including a link to where I can do that. I did that and so far, it is stuck on "please wait while the application initializes." I'm thinking it's not going to happen so I've come here.
Any ideas would be appreciated!

Answer 1

First of all, let me correct an incongruency in your post, Mr. Cox: you say it works for "almost everyone" yet also state that it fails "only" for me. These can't both be correct, and of course we all know the latter is clearly incorrect because we can see from this thread that someone else has also had the problem.
Also, I am not sure that the problem has been attributed with absolute certainty to a "bad download", although I tend to agree that it's the most likely explanation. Has it?
Now consider this: I posted here for the exact reason that Adobe needs to know this is not a problem with only one computer and one user. I took some time out of my work day because I appreciate Adobe.
They might want to know that I had the problem on a fresh install on my home computer, one that was only days ago running CS5 from ym first install, which went without a hitch. In solving this, I am happy to post any system information, error logs, checksums, or ANYTHING that Adobe would like to see that would result in the resolution of this problem. As you know I can solve the problem myself because I have the original uncorrupted files here at work. But, really, being as Adobe has decided to use a special download and installation package, which I know can be somewhat quirky from past experience, I think it is Adobe's responsibility to listen to download/installation problems. AND as their customer service has never been anything but exemplary in the past, Mr. Cox, this is exactly why I posted here. Because they do listen.
What should they do? It seems to me, although I'm no programmer, that in this day and age there is no reason that a download should be completed and still not function. There are solutions aplenty that ensure data is transmitted without error, and I quite frankly do not understand why they have not already used such a solution (if bad download is in fact the problem here). For example, can they not make a downloader that runs a checksum for us, and tells us if we have a bad download, or runs packets through one to make sure that everything is coming in correctly as we download? Can corrupted packets be discarded and redownloaded automatically so that crappy connections still get their software in pristine condition, and nobody has to post or call in about stuff like this?
That would seem to be a good idea.
Cheers,
o.0