`bzr info -v` incorrectly shows age of the branch

[Alexander Belchenko]

I have branch starting in 2005, later there was another unrelated branch merged into it. `bzr info -v` lies about the age of the branch, and it seems `bzr info -v` uses first revision from another merged branch to detremine the age.

C:\work\MyCode\logic>bzr info -v
Lightweight checkout (format: pack-0.92)
Location:
  light checkout root: .
   checkout of branch: .bzr/branches/trunk
    shared repository: .bzr/branches

Format:
       control: Meta directory format 1
  working tree: Working tree format 4
        branch: Branch format 7
    repository: Packs 6 (uses btree indexes, requires bzr 1.9)

In the working tree:
      1242 unchanged
         0 modified
         0 added
         0 removed
         0 renamed
         0 unknown
        48 ignored
       230 versioned subdirectories

Branch history:
      1052 revisions
       623 days old
   first revision: Mon 2009-02-09 13:51:58 +0200
  latest revision: Mon 2010-10-25 15:07:44 +0300

Repository:
      2881 revisions

C:\work\MyCode\logic>bzr log -r1
------------------------------------------------------------
revno: 1
committer: Alexander Belchenko <email address hidden>
timestamp: Fri 2005-12-16 14:25:16 +0200
message:
  Initial import from CVS

This is with bzr 2.2.1