User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.1) Gecko/20060111 Firefox/1.5.0.1 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.1) Gecko/20060111 Firefox/1.5.0.1 When you have for example 3 tabs, say tabs A, B, and C, A being the farthest left and C being the farthest right, and you're on tab A and then you go to tab C and close tab C, then it will not go back to your last viewed tab but instead to the tab farthest right in this case tab B. No matter what tab you close, it will always switch to the tab fartherst to the right. Reproducible: Always Steps to Reproduce: 1. Have more than 2 tabs open 2. On one of the tabs that is at least 3rd from the right or more 3. Switch to any other tab 4. Close tab Actual Results: It will go to the tab farthest right instead of the one you were last at Expected Results: It should go back to the last tab you were on

If you mean that you first made tab C active before closing that tab, it seems logical behaviour to me. Maybe there are extensions for this function?

see http://wiki.mozilla.org/Link_Targeting#Moving_Focus_after_Closing_Tabs This was fixed in bug 308396 (in latest trunk) and will be in Firefox 2.0. *** This bug has been marked as a duplicate of 308396 ***

Only with "Select tabs opened from links" checked.