[Bug 275471]

[Romariosso]

(In reply to Joe Smith from comment #140)
> The original problem is still present in TB 5.0. Just as is the one in
> https://bugzilla.mozilla.org/show_bug.cgi?id=439731 (reloading of read
> messages).

Actually, it seems to have been rather a user error in my case. :) The
problem occured when I had limited the size of e-mails to be downloaded
to 100kB. That was the case ever since I started using TB almost a year
ago. So that those large e-mails (and also their attachments) were
downloaded each time the e-mail was opened or the attachments saved.

After disabling of the mail size limit in account options the problem
seems to be gone. TB then downloaded all the previously too large
e-mails. It now still shows "loading" for a short time when a large
e-mail is opened, but that seems to be loading from hard disk (which
goes very busy during that time) while the network connection is idle. I
gueass that rather short loading time now is probably a result of the
compression I have activated in TB for the e-mail files, and the
subsequent need to decompress when opening an e-mail.

So, there seems to be no issue for me after all.

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https://bugs.launchpad.net/bugs/275471

Title:
  mozilla attachments are dowloaded multiple times

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