User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.1) Gecko/20090715 Firefox/3.5.1 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.1) Gecko/20090715 Firefox/3.5.1 the message appears in the pane which lists all the messages, but clicking on a message brings just a blank in both the lower pane (I don't know what you call these panes) or just a blank if you double click it. The phenomenon appears totally random. Reproducible: Sometimes

What version of TB?

version 2.0.0.22 (20090605)

When this happens can you right-click on the folder select properties and choose rebuild index to see if it fixes your issue ?

I have tried that solution in the past, but when I do it, ALL messages just disappear; the inbox shows empty, and has to be restored from a backup. This only happens with the inbox, by the way.

Could be an antivirus effects? In options-->security-->anti-virus have you uncheched "Allow antivirus clients to quarantine individual incoming messages"?

It is unchecked.

Should be checked, because if you have an email with virus your antivirus quarantine all. If you have an antivirus, you see anything quarantined?

Okay. I've checked that box. There are four inbox entries quarantined and one trash.mbx.

I remember that a similar case it happens to me 5-6 years ago: I resolve restoring files from quarantine using antivirus button... can you doit too?

I attempted that, but it wants to replace the inbox file. That makes me nervous.

This isn't a problem: 1. you can exporte current inbox as mbox file (called A), selecting all current messages that you have stored in inbox with an extension as ImportExportTools at http://nic-nac-project.de/~kaosmos/mboximport-en.html and, 2. restore old mbox file of your inbox folder that antivirus has quarantined and at the end import the current inbox (called B). 3. re-import A to your inbox folder. instead step 1, you can copy all your Inbox emails into a new folder (not sub folder of inbox) and after in instead of point 3 move it on the restored Inbox. For prevent all problem you can make a backup of your profile as described in http://kb.mozillazine.org/Backing_up_your_mail,_address_books,_and_settings I hope this help you.

(In reply to comment #11) > For prevent all problem you can make a backup of your profile as described in > http://kb.mozillazine.org/Backing_up_your_mail,_address_books,_and_settings Not you CAN, but is better you HAVE TO DO!

After reading all the web pages, the whole process looks very intimidating and fraught with dangers. I think I'll just let the whole thing go and hope it doesn't happen again. Thanks for the help.

No John, it is easier than it looks: just copy the current Inbox in one place to another folder where it can not be overwritten by the restoration of files in quarantine. However I can close the bug? ps: with "Allow antivirus clients to quarantine individual incoming messages" checked, you are sure: >it doesn't happen again Ciao.

RESO INCO due to lack of response to last question. If you feel this change was made in error, please respond to this bug with your reasons why.