Salut à tous, sometimes modems don't like upstream saturation which means that you upload at the capacity of you line. Go in options or preferences and select upload -basic - and move the slider 2-5KB/s less than you upload capacity. You can go to dslreports.com to determine your upload speed in the tools section (be sure to not run other thing than your browser then). The speed will be given in Kb/s you have to do a conversion of speed with a factor of 8 ie 100kps /8 = 12,5 KB/s, then you put the upload limit to 10KB/s by moving the slider in preferences.

Bonne chance