My team is actively trying to track down where and specifically "why" our forum readers are experiencing these issues. The digest of items you have listed in this post are very helpful.
We are working on resolving these issues. For instance the memory in the web server used by the beading and jewelry web sites was doubled just last week to help deal with peak usage and traffic trends.
One metric would be of particular interest - I really need a sampling of the specific days and times logged when the weird page loading occurs. With a day and specific time - I can track down within performance and error reporting what is happening with the servers.
We are reviewing these issues as a team and understand the frustration. We are still trying to reproduce the errors to match the symptoms reported here (as well as BeadStyle and Art Jewelry).
Send me a "Personal Message" through the board with the specific date and time you observe these issues.
Thank you