I've noticed a bug in the latest version of .10 that we are using. Deleting an existing single tag while using the "tag" screen of the item creation/editing interface results in the deletion of all tags associated with an object instead of just the one selected. I've replicated the error in FF2, FF3, IE7 on windows and Safari on a MAC. We are running omeka on a typical LAMP setup. Has anyone else experienced this problem?
I'm not able to replicate this on FF3/Mac. Are you talking about the tags panel in the admin/items/edit page for an item, or the admin/items/show page, with the tags panel in the sidebar? And, are you using the latest stable 0.10 release of Omeka, or 0.10 beta? We haven't seen/heard about this bug in either version, but it would help us to know what version your using to track it down.
This problem is happening in tags panel on the admin/items/edit part of the management interface. We are using the 12-18 edition of .10 stable. I've had the problem happen in FF2, IE7 on Windows and FF3 and Safari 3.2.1 on OSX 10.5.6.