Are you using some sort of firewall? Do check your firewall and see if electrum is allowed to receive incoming traffic and it should be allowed to send the out going traffic too. Looks like something is stopping electrum's traffic and do update to the latest version as hcp said.
Checking the version he do use is old and as being suggested downloading the latest one would be the first move to do and if red dot is still there then syncing does really have a problem and I did experience this.I do really bet 100% that firewall is the cause of this problem because it redirects the traffic needed to be sync. Why I'm sure? because I do experience this thing.