Just woke up one morning and got this???? Why??

Warning: vsprintf() href='function.vsprintf'>function.vsprintf</a>: Too few arguments in C:\wamp\www\statistik\core\Translate.php on line 158

Backtrace -->
#0 Piwik_ErrorHandler(2, vsprintf() href='function.vsprintf'>function.vsprintf</a>: Too few arguments, C:\wamp\www\statistik\core\Translate.php, 158, Array ([=> Piwik %s finns tillgängligt. %s Var v&%auml;nlig uppdatera! %s (se %s ändringar%s).,args => Array ([=> 0.2.37,1 => <br /><a href='index.php?module=CoreUpdater&action=newVersionAvailable'>,[=> </a>,3 => <a href='misc/redirectToUrl.php?url=http://piwik.org/changelog/' target='_blank'>,[4] => </a>)))
#1 vsprintf(Piwik %s finns tillgängligt. %s Var v&%auml;nlig uppdatera! %s (se %s ändringar%s)., Array ([=> 0.2.37,1 => <br /><a href='index.php?module=CoreUpdater&action=newVersionAvailable'>,[=> </a>,3 => <a href='misc/redirectToUrl.php?url=http://piwik.org/changelog/' target='_blank'>,[=> </a>)) called at C:\wamp\www\statistik\core\Translate.php:158
#2 Piwik_Translate(General_PiwikXIsAvailablePleaseUpdateNow, Array ([=> 0.2.37,1 => <br /><a href='index.php?module=CoreUpdater&action=newVersionAvailable'>,[=> </a>,3 => <a href='misc/redirectToUrl.php?url=http://piwik.org/changelog/' target='_blank'>,[=> </a>)) called at C:\wamp\www\statistik\core\SmartyPlugins\modifier.translate.php:34
#3 smarty_modifier_translate(General_PiwikXIsAvailablePleaseUpdateNow, 0.2.37, <br /><a href='index.php?module=CoreUpdater&action=newVersionAvailable'>, </a>, <a href='misc/redirectToUrl.php?url=http://piwik.org/changelog/' target='_blank'>, </a>) called at [C:\wamp\www\statistik\tmp\templates_c%%FB^FB3^FB3A69AF%%header_message.tpl.php:11]
#4 include(C:\wamp\www\statistik\tmp\templates_c%%FB^FB3^FB3A69AF%%header_message.tpl.php) called at [C:\wamp\www\statistik\libs\Smarty\Smarty.class.php:1870]
#5 Smarty->_smarty_include(Array ([=> CoreHome/templates/header_message.tpl,smarty_include_vars => Array ())) called at [C:\wamp\www\statistik\tmp\templates_c%%00^00A^00A3E455%%header.tpl.php:5]
#6 include(C:\wamp\www\statistik\tmp\templates_c%%00^00A^00A3E455%%header.tpl.php) called at [C:\wamp\www\statistik\libs\Smarty\Smarty.class.php:1870]
#7 Smarty->_smarty_include(Array ([=> CoreHome/templates/header.tpl,smarty_include_vars => Array ())) called at [C:\wamp\www\statistik\tmp\templates_c%%77^771^77160059%%index.tpl.php:36]
#8 include(C:\wamp\www\statistik\tmp\templates_c%%77^771^77160059%%index.tpl.php) called at [C:\wamp\www\statistik\libs\Smarty\Smarty.class.php:1264]
#9 Smarty->fetch(CoreHome/templates/index.tpl) called at [C:\wamp\www\statistik\core\View.php:113]
#10 Piwik_View->render() called at [C:\wamp\www\statistik\plugins\CoreHome\Controller.php:65]
#11 Piwik_CoreHome_Controller->index()
#12 call_user_func_array(Array ([=> Piwik_CoreHome_Controller Object ( => CoreHome,[=> 2009-05-11, => Piwik_Date Object ([=> 1241992800)),1 => index), Array ()) called at [C:\wamp\www\statistik\core\FrontController.php:143]
#13 Piwik_FrontController->dispatch() called at [C:\wamp\www\statistik\index.php:49]