I've been trying to download updates, and keep getting the following message:

W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/...ntu2_amd64.deb
404 Not Found

I have Ubuntu 8.04.01 (64-bit) installed with Wubi on my C: drive in WinXPMCE. I have the same version (32-bit) installed in my second computer upstairs (this one is on its own partition), and downloads work fine up there. I have Internet working. (Cable) Upstairs is wireless off my cable. When I enter the IP Address in Firefox in WinXP, it also says that it could not be found. (I should mention that when I tried yesterday, the error message gave me an address, today it didn't). Anyone have any ideas?

Only thing I can think of is that the us mirror is actually down. You could either wait for it to come up again or try a different mirror. This link works, for example:

http://mirror.psigrid.gov.ph/ubuntu/...ntu2_amd64.deb

I thought of the mirror being down but this happened yesterday afternoon. Shortly thereafter I went upstairs and downloaded 226 updates (this was a new install). Tried down here again today and got skunked again. I guess I will keep trying. Thanks for the input, Mega Man X.

How would I redirect the Update Manager to a different mirror?

add the mirror to
/etc/apt/sources.list

I got to that file, but am having some difficulty seeing how I can add that. As you can tell, I'm pretty new at this.

find
http://us.archive.ubuntu.com/ubuntu/
and replace it with
http://mirror.psigrid.gov.ph/ubuntu/

The suggestion posted above is correct, but since you are new, you may find this easier:

- Go to System > Administration > Software Sources;
- Under "Download from" try a new location;
- I am not sure if it will prompt you to reload or if it will reload automatically. Anyway, to be sure, open a terminal and type "sudo apt-get update"
- Re-run the update manager at System > administration > Update Manager

Hopefully, the new mirror you picked at step #2 will work

I got another suggestion to reload software sources, and that seemed to do the trick. Thanks to both of you for taking the time to respond.