ice dragon not responding

Since 2-3 days , i get lags with a freeze during few seconds then the browser works again , then again a freeze ( ice dragon not responding message ) : it’s happening every 1-2 minutes . I tried to reinstall , same problem . I also tried to restart in safe mode browsing with add-on disabled but again same problem.
I noticed also that it’s impossible to check for an update

Thanks in advance for your help

Having same problem. Ice Dragon, you are on a short leash.