The automatically detect slows down the initial connection, but doesn't
interfere with it beyond that, as far as I've spotted.
The proxy thought is interesting. We've had some runs of users with either
persistent bad downloads, persistent receipt of the wrong build version
download, or persistent corrupted downloads, some of which might be due to
caching issues.
The test machine I've got which can't send a report is behind ISA server
2000, which is an automatic proxy. However, most other machines on that
network can send reports fine.
That particular machine is an upgrade of retail XP over OEM Windows 2000.
I've got another machine with that same upgrade path in the same office
which I should check to see if it has the same issue. Hmm--NOPE. So much
for that idea.