Hi,
I have been lurking here a while now and have something to say.
First thanks for the good work guys codeblocks is shaping up very nicely!
I too have been unable to download the 7zip ansi nightly builds using win98se.  It does however download correctly in winXP.  I have investigated the problem and the archive is being truncated at around 3.5MB hense the unpacking error.  I have eliminated my virus checker and firewall from suspision and the problem occurs with both Firefox and IE5.  The other 7zips hosted by berlioz download fine, and so I wonder if googlepages is the culprit?  But the wxwidgets file does download fine, so the problem must be with the file length.  This is as far I have been able to investigate, but I hope this helps.
Regards
Craig