User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1.1) Gecko/20090715 Firefox/3.5.1 (.NET CLR 3.5.30729) Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1.2pre) Gecko/20090724 Shredder/3.0b4pre ID:20090724050314 when using a filter via quick search, the unread-counter in the grouped by sort header displays a negative unread counter. Reproducible: Always Steps to Reproduce: 1. active grouped by sort via menu: 1a View | Sort by | Date 1b View | Sort by | Descending 1c View | Sort by | Grouped By Sort 2. use the quick search box to filter for a string - e.g. "zarg" 3. in my example, i now see a collapsed "Last Week (2/2)" Group with two unread emails of 2 total found emails 4. double click the group, it opens the two messages in new tabs 5. switch back to the "Inbox - ..." tab 6. i can now see a "Last Week (-1/2)" Group 7. switch back to the last message (rightmost tab) 8. close both messages using [x] in the right, upper corner of the tab *without* switching back to the "Inbox - ..." tab 9. i can now see a "Last Week (-3/2)" Group 10. expanding the "Last Week (-3/2)" Group, i can see two unread messages 11. clicking the "green dot" to mark the messages as unread, the unread-counter in the "Last Week (-3/2)" group increases to -1: "Last Week (-1/2)" Actual Results: incorrect, negative unread counters Expected Results: correct unread counters that can actually never be negative

Hi Raoul, WFM here on Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.3pre) Gecko/20090730 Lightning/1.0pre Shredder/3.0b4pre ID:20090730055316 Could you try to see if it still happens with http://ftp.mozilla.org/pub/mozilla.org/thunderbird/nightly/latest-comm-1.9.1/ ?

does not work on vista business using Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1.3pre) Gecko/20090801 Shredder/3.0b4pre ID:20090801114732 i downloaded this version from the link you provide.

i today tested with Mozilla/5.0 (X11; U; Linux i686 (x86_64); de-DE; rv:1.9.1.3pre) Gecko/20090809 Shredder/3.0b4pre on Ubuntu 8.04.3 LTS (hardy) i still see the negative message count. cheers, raoul

Confirming on TB 8. Testcase with filter resulting in 6 unread messages in group out of 7 shown. In step 6 I do not get a negative number, but instead an overflowed interger, like 4294967295/7. I am on linux, 32bit. The count does not change in step 9. However, when marking the 1 read message as unread, the number disappears (as if incremented up to 0) and is shown as (7) instead of (7/7).