Calendar Base

Hi,
i get a lot of error messages in the backend log:

Core: Error handler (FE): PHP Warning: Missing argument 3 for tslib_fe::tslib_fe(), called in /html/typo3/typo3_src-4.5.8/t3lib/class.t3lib_div.php on line 5358 and defined in /html/typo3/typo3_src-4.5.8/typo3/sysext/cms/tslib/class.tslib_fe.php line 432

Core: Error handler (FE): PHP Warning: Missing argument 2 for tslib_fe::tslib_fe(), called in /html/typo3/typo3_src-4.5.8/t3lib/class.t3lib_div.php on line 5358 and defined in /html/typo3/typo3_src-4.5.8/typo3/sysext/cms/tslib/class.tslib_fe.php line 432

Core: Error handler (FE): PHP Warning: Missing argument 1 for tslib_fe::tslib_fe(), called in /html/typo3/typo3_src-4.5.8/t3lib/class.t3lib_div.php on line 5358 and defined in /html/typo3/typo3_src-4.5.8/typo3/sysext/cms/tslib/class.tslib_fe.php line 432

I changed the function call "class.tx_cal_tsfe.php->tx_cal_tsfe" so every parameter is optional:
function tx_cal_tsfe($TYPO3_CONF_VARS = array(), $id = 0, $type = '0', $no_cache='', $cHash='', $jumpurl='',$MP='',$RDCT=''){

But imho this is only a workaround for getting the log flooded. I did not checked where it gets called without arguments.

Perhaps i am totally wrong, but these error messages only appears with cal enabled.