I’ve been working on changing the way loading folders of photos works. In the next beta, while you are loading a folder there will be a status bar and a cancel button.
This should fix the browser timeout issues as well. I’m also re-using the already created thumbnail images when the photos are saved to the database instead of creating them a second time. AND I give you a chance to back out if you choose to add a folder that has 250 or more images in it.
These are signifigant changes to the way this currently works so I’d like to do a private beta release to people who are comfortable on the bleeding edge before I do a public beta release. If you’d like to be a tester, let me know.