Fwd: error PHP Warning: strftime()

[Schröter HRZ]

Hi everybody I am not sure if this is the right mailinglist but I figured I could ask you guys too.

I just tried to install kolab on debian sid. So far so good. But the
apache error log gives me a couple of errors and the login page stays
blank. It's not like the bug where you need to delete your cookies and
everything is fine again.

The errors are:
[Thu Mar 04 20:05:10 2010] [error] [client 85.180.141.150] PHP Warning:
is_a() expects parameter 2 to be string, object given in
/etc/kolab-webclient/horde3/hooks.php on line 119
[Thu Mar 04 20:05:10 2010] [error] [client 85.180.141.150] PHP Warning:
is_a() expects parameter 2 to be string, object given in
/etc/kolab-webclient/horde3/hooks.php on line 107
[Thu Mar 04 20:05:10 2010] [error] [client 85.180.141.150] PHP Warning:
strftime(): It is not safe to rely on the system's timezone settings.
You are *required* to use the date.timezone setting or the
date_default_timezone_set() function. In case you used any of those
methods and you are still getting this warning, you most likely
misspelled the timezone identifier. We selected 'Europe/Berlin' for
'CET/1.0/no DST' instead in /etc/kolab-webclient/horde3/prefs.php on
line 338
[Thu Mar 04 20:18:26 2010] [error] [client 85.180.141.150] PHP
Deprecated:  Assigning the return value of new by reference is
deprecated in /usr/share/horde3/kronolith/lib/Driver.php on line 201

The last one in more than one file.

I read that this is due to a new version of smarty, if that is right,
how can i fix it?

Thanks Alexander