[OSM-newbies] Uploading traces: no ack via firefox?

[ael]

Yesterday I uploaded a gpx trace using firefox. There was no response.
So I tried again. As I recall, the browser declared a timeout after
waiting for a response. I tried repeatedly with the same result.
I checked the status of the servers: no problems reported.

Subsequently, I discovered that all the uploads had succeeded, so now I need
to remove all the duplicates :-(

Is this a known problem? I didn't check my firewall log to see if the
replies were somehow being blocked, but that seems unlikely. It used to work,
and the firewall will not block open connections.

ael