I emailed James (developer of the new LCT) last night about these issues and he suggested some things that I could try in the control panel, which I did this morning. Not yet sure if this helped the issues or not, but it was worth a try.

James emailed me back later on today with this response in simple terms:

If it's an issue with the forum software it should really effect everyone... There are a lot of variables these days on everyones individual computers to take into account that can really mess things up such as:

A. Virus Scanners can, at times, block certain cookies that can block particular functions from working.

B. Firewalls can simply block cookies that are necessary for a website to function correctly or even entire connections to sites.

With both A and B above, most users have a "security" software and they are not really aware of all the things that it can block. We all want all the protection that we can get from virus attacks and cookies that can track your activity. However some cookies make things work correctly.

For the users having issues he suggested they try a separate browser to see if it fixes the issue, if not ask them to disable any firewalls or virus scanners temporarily to see if it eases the issue so that we can attempt to pinpoint the problem."

Ken