Committing revision throws wrong error when PuTTY key not loaded

I was told to file a bug here via IRC.

ISSUE:
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When committing new content to a server on my LAN, the Bazaar client throws the wrong kind of error when I forgot to load my Private Key for authentication.

CLIENT:
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Windows 7 Home Premium x64 SP1

PuTTY version on Windows Client:
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0.62

Bazaar Version on Windows Client:
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bzr version: 2.4.2
Bazaar Explorer: 1.2.1
QBzr: 0.21.1
bzrlib: 2.4.2
PyQt: 4.8.4
Qt: 4.7.2
Python: 2.6.6

SERVER:
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Ubuntu 11.11 x32

Bazaar version on Linux Server:
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bzr version: 2.4.2

LOG:
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Wed 2012-01-18 14:39:27 -0500
0.053 bazaar version: 2.4.2
0.053 bzr arguments: [u'qsubprocess', u'--bencode', u'@c:/users/wolf/appdata/local/temp/QBzr/qsubprocess/tmpczwrwu']
0.081 looking for plugins in C:/Users/Wolf/AppData/Roaming/bazaar/2.0/plugins
0.081 looking for plugins in C:/Program Files (x86)/Bazaar/plugins
0.164 encoding stdout as osutils.get_user_encoding() 'cp1252'
0.257 bazaar version: 2.4.2
0.257 bzr arguments: [u'commit', u'-m', u'* Added ignore\n* Changed button text slightly', u'SOPAPIPABuster', u'.bzrignore', u'SOPAPIPABuster/bin/SOPAPIPABuster.swf', u'SOPAPIPABuster/obj/SOPAPIPABusterConfig.old', u'SOPAPIPABuster/obj/SOPAPIPABusterConfig.xml', u'SOPAPIPABuster/src/MenuState.as', u'SOPAPIPABuster/SOPAPIPABuster.as3proj']
0.259 encoding stdout as osutils.get_user_encoding() 'cp1252'
0.290 opening working tree 'D:/projects/SOPA/SOPA'
0.363 falling back to default implementation
0.363 failed to load system host keys: [Errno 2] No such file or directory: 'C:\\Users\\Wolf/.ssh/known_hosts'
[ 3588] 2012-01-18 14:39:27.908 INFO: Connected (version 2.0, client OpenSSH_5.8p1)
5.562 Could not connect to bound branch, falling back to local nick.
 Unable to connect to target of bound branch BzrBranch7(file:///D:/projects/SOPA/SOPA/) => bzr+ssh://wolf@10.8.31.188:8888/sopa/.bzr/branches/trunk/: Connection error: Unable to authenticate to SSH host as
  wolf@10.8.31.188
supported auth types: ['publickey']
5.562 preparing to commit
5.571 Transferred: 0kB (0.0kB/s r:0kB w:0kB)
5.571 Transferred: 0kB (0.0kB/s r:0kB w:0kB)
5.571 Traceback (most recent call last):
  File "bzrlib\commands.pyo", line 946, in exception_to_return_code
  File "bzrlib\commands.pyo", line 1150, in run_bzr
  File "bzrlib\commands.pyo", line 699, in run_argv_aliases
  File "bzrlib\commands.pyo", line 721, in run
  File "bzrlib\cleanup.pyo", line 135, in run_simple
  File "bzrlib\cleanup.pyo", line 165, in _do_with_cleanups
  File "C:/Program Files (x86)/Bazaar/plugins\qbzr\lib\commands.py", line 821, in run
  File "C:/Program Files (x86)/Bazaar/plugins\qbzr\lib\subprocess.py", line 888, in run_subprocess_command
  File "bzrlib\commands.pyo", line 1150, in run_bzr
  File "bzrlib\commands.pyo", line 699, in run_argv_aliases
  File "bzrlib\commands.pyo", line 721, in run
  File "bzrlib\cleanup.pyo", line 135, in run_simple
  File "bzrlib\cleanup.pyo", line 165, in _do_with_cleanups
  File "bzrlib\builtins.pyo", line 3316, in run
  File "bzrlib\decorators.pyo", line 217, in write_locked
  File "bzrlib\workingtree_4.pyo", line 209, in commit
  File "bzrlib\decorators.pyo", line 217, in write_locked
  File "bzrlib\mutabletree.pyo", line 210, in commit
  File "bzrlib\commit.pyo", line 289, in commit
  File "bzrlib\cleanup.pyo", line 131, in run
  File "bzrlib\cleanup.pyo", line 165, in _do_with_cleanups
  File "bzrlib\commit.pyo", line 363, in _commit
  File "bzrlib\commit.pyo", line 512, in _check_bound_branch
  File "bzrlib\decorators.pyo", line 154, in read_locked
  File "bzrlib\branch.pyo", line 2597, in get_master_branch
  File "bzrlib\branch.pyo", line 2606, in _get_master_branch
  File "bzrlib\branch.pyo", line 184, in open
  File "bzrlib\bzrdir.pyo", line 828, in open
  File "bzrlib\bzrdir.pyo", line 863, in open_from_transport
  File "bzrlib\bzrdir.pyo", line 1590, in open
  File "bzrlib\remote.pyo", line 293, in _open
  File "bzrlib\remote.pyo", line 356, in __init__
  File "bzrlib\remote.pyo", line 368, in _probe_bzrdir
  File "bzrlib\remote.pyo", line 375, in _rpc_open_2_1
  File "bzrlib\remote.pyo", line 56, in _call
  File "bzrlib\smart\client.pyo", line 132, in call
  File "bzrlib\smart\client.pyo", line 145, in call_expecting_body
  File "bzrlib\smart\client.pyo", line 90, in _call_and_read_response
  File "bzrlib\smart\client.pyo", line 45, in _send_request
  File "bzrlib\smart\client.pyo", line 115, in _construct_protocol
  File "bzrlib\smart\medium.pyo", line 710, in get_request
  File "bzrlib\smart\medium.pyo", line 968, in __init__
TooManyConcurrentRequests: The medium 'SmartSSHClientMedium(bzr+ssh://wolf@10.8.31.188:8888/)' has reached its concurrent request limit. Be sure to finish_writing and finish_reading on the currently open request.

5.573 couldn't find apport bug-reporting library: No module named apport
5.580 return code 4
13.967 check paths: None
13.985 check paths: None
14.004 check paths: None
14.022 check paths: None