I plan to upgrade a lot of the software this week. First will be the swap as that is a stand alone application. Then will be the photo gallery to a more robust photo gallery solution. Finally will be the forum software to one that is sooo much better.
The login issues are related to cookies but I am not very familiar with configuring our current setup so I am afraid to make any changes prior to upgrading. So look for more details as the week goes on and certain pieces are upgraded.
Also, the new software will allow you to upload an avatar from your computer, have a better spell check, better text editor, etc.
Sorry for the inconvenience that some of you are having and I will be working to fix things all week...