Since yesterday I have suddenly a problem with Firefox. When I try to upload a photo to Flickr or Coppermine (installed at a webspace provider) it fails. For a long time Firefox tries to connect to the sites and then gives the message the connection was re-initialized. What have I done to try to solve this: - Checked if there were updates for the plug-ins I use. - I cleared the cache of Firefox, did not help. - I tried to start to start Firefox in "safe mode" to see if one of the plugi-ns caused the problems, but that didn't solve the problem. - I re-installed Firefox (after de-installing it), sadly the problem was still there. - I disabled all the plug-ins on the new install, no result. I loaded Internet Explorer and I could upload photo's to both Flickr and Coppermine without any problem. I loaded Firefox on another computer within my home network and I could upload photo's without any problems to Flickr and Coppermine (btw all installs of Firefox are of version 43.0.1). Anyone an idea what might be wrong here? Regards, Rob.