Package: icedove
Version: 1:45.6.0-2
Severity: normal

--- Please enter the report below this line. ---

I just migrated my thunderbird profile to a new computer. In
thunderbird, Iuse the classic view with acounts and folders on the left,
message list in the upper right, message text in the lower right.
I have two POP3 accounts, three IMAP accounts, one news account.

After copying the contents of my old profile onto the new machine,
initially the number of unread messages was not displayed (at least for
the POP3 acounts). All folders looked as if they did not have unread
messages.

When starting thunderbird, scrolling the left window (i.e. the one with
the accounts and their folders) was very slow. Thunderbird would not
react for nearly a second. The problem was worse when the POP3 accounts
were in view, and was not there when the news account was scrolled into
view.
Restarting thunderbird did not help.

When I clicked individual folders, the number of unread messages showed
up next to the folder names. And scrolling got faster. After clicking
all individual folders and subfolders in all accounts, scrolling speed
now seems back to normal.

Philipp

--- System information. ---
Architecture: Kernel:       Linux 4.9.0-1-amd64

Debian Release: 9.0
  500 unstable        ftp.de.debian.org   500 testing
ftp.de.debian.org
--- Package information. ---
Depends                               (Version) | Installed
===============================================-+-===================
debianutils                           (>= 1.16) | 4.8.1
fontconfig                                      | 2.11.0-6.7
psmisc                                          | 22.21-2.1+b1
libasound2                          (>= 1.0.16) | 1.1.3-4
libatk1.0-0                         (>= 1.12.4) | 2.22.0-1
libc6                                 (>= 2.17) | libcairo2
          (>= 1.10.2-2~) | libdbus-1-3                         (>=
1.9.14) | libdbus-glib-1-2                      (>= 0.78) |
libevent-2.0-5               (>= 2.0.10-stable) | libffi6
              (>= 3.0.4) | libfontconfig1                        (>=
2.11) | libfreetype6                         (>= 2.2.1) | libgcc1
                      (>= 1:4.0) | libgdk-pixbuf2.0-0
(>= 2.22.0) | libglib2.0-0                        (>= 2.22.0) |
libgtk2.0-0                         (>= 2.24.0) | libhunspell-1.4-0
                         | libicu57                           (>=
57.1-1~) | libnspr4                          (>= 2:4.10.9) | libnss3
                        (>= 2:3.26) | libpango-1.0-0
 (>= 1.14.0) | libpangocairo-1.0-0                 (>= 1.14.0) |
libpangoft2-1.0-0                   (>= 1.14.0) | libpixman-1-0
             (>= 0.19.6) | libsqlite3-0                        (>=
3.7.10) | libstartup-notification0               (>= 0.8) | libstdc++6
                          (>= 5.2) | libvpx4
 (>= 1.6.0) | libx11-6                                        |
libxcomposite1                     (>= 1:0.3-1) | libxdamage1
              (>= 1:1.1) | libxext6
  | libxfixes3                                      | libxrender1
                             | libxt6
      | zlib1g                             (>= 1:1.2.0) |

Recommends                   (Version) | Installed
======================================-+-===============
iceowl-extension        (= 1:45.6.0-2) | 1:45.6.0-2
myspell-en-us                          |  OR hunspell-dictionary
       |  OR myspell-dictionary                 |

Suggests              (Version) | Installed
===============================-+-===========
apparmor                        | fonts-lyx                       | 2.2.2-1
libgssapi-krb5-2                | 1.15-1

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