My LAMP has been using tklbam for quite some time now and it stopped working on 4-4-2012.  I ran a manual backup from Webmin and it failed with a "server certificate verification failed" error.

> tklbam-backup
Traceback (most recent call last): 
File "/usr/bin/tklbam-backup", line 266, in <module> 
main() 
File "/usr/bin/tklbam-backup", line 195, in main 
conf.profile = get_profile(hb) 
File "/usr/bin/tklbam-backup", line 122, in get_profile 
new_profile = hb.get_new_profile(turnkey_version, profile_timestamp) 
File "/usr/lib/tklbam/hub.py", line 207, in get_new_profile 
response = self._api('GET', 'archive/timestamp/', attrs) 
File "/usr/lib/tklbam/hub.py", line 185, in _api 
return API.request(method, self.API_URL + uri, attrs, headers) 
File "/usr/lib/tklbam/hub.py", line 117, in request 
func(attrs) 
File "/usr/lib/python2.5/site-packages/pycurl_wrapper.py", line 55, in get 
return self._perform() 
File "/usr/lib/python2.5/site-packages/pycurl_wrapper.py", line 40, in _perform 
self.c.perform() 
pycurl.error: (60, 'server certificate verification failed. CAfile: /etc/ssl/certs/hub-turnkeylinux-org.crt')