[Bug 296563] Re: support.ati.com: Firefox 3 on Ubuntu 8.10, form submit to ATI site hangs and eventually reports error, when trying to submit bug report. The same URL/report on Firefox 2.x/Firefox 3.x on Windows succeeds.

[Walter Prins]

OK, I've tonight finally figured out what the problem is, and it's not
to do with Firefox on Ubuntu, fortunately, but rather there's some odd
MTU issue on my local network/my router (DLink DSL G604T) and ISP.   (I
did a test from a VM on one of my boxes which routes via the host box
which also uses a reduced MTU (which was originally done to correct
network connectivity issues as well, quite some time ago) and lo and
behold the test page worked.  I had not previously considered that the
MTU might be the problem because the MTU on Windows (on the problem
machine) looked the same as the one used by Ubuntu (e.g. 1500), which
therefore seemed to rule out MTU as the culprit.   But, suffice it to
say, after finding the VM working, I then decided to retry on the
problem box, first without setting the MTU thus leaving it at 1500 (as
expected it failed), and reducing it to match my server box's, at which
point it worked flawlessly.

So, please close this ticket, it's not a bug!!  Thanks for your patience
and apologies for wasting your time!

-- 
support.ati.com: Firefox 3 on Ubuntu 8.10, form submit to ATI site hangs and eventually reports error, when trying to submit bug report. The same URL/report on Firefox 2.x/Firefox 3.x on Windows succeeds.
https://bugs.launchpad.net/bugs/296563
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