Sure can. Here is what I see at the top of the page on my site.
Notice: Use of undefined constant wp_cumulus_widget – assumed ‘wp_cumulus_widget’ in /home/—-/public_html/—-/wp-content/plugins/wp-cumulus/wp-cumulus.php on line 375
Notice: register_sidebar_widget is deprecated since version 2.8! Use wp_register_sidebar_widget() instead. in /home/—-/public_html/—-/wp-includes/functions.php on line 2841
Notice: register_widget_control is deprecated since version 2.8! Use wp_register_widget_control() instead. in /home/—-/public_html/—-/wp-includes/functions.php on line 2841
The other site produces much more, oh dear!
Notice: register_uninstall_hook was called incorrectly. Only a static class method or function can be used in an uninstall hook. Please see Debugging in WordPress for more information. (This message was added in version 3.1.) in /home/—–/public_html/—–/wp-includes/functions.php on line 2962
Warning: session_start() [function.session-start]: Cannot send session cache limiter – headers already sent (output started at /home/—–/public_html/—–/wp-includes/functions.php:2962) in /home/—–/public_html/—–/wp-content/plugins/paid-memberships-pro/paid-memberships-pro.php on line 23
Notice: A session had already been started – ignoring session_start() in/home/—-/public_html/—-/wp-content/plugins/ready-ecommerce/classes/req.php on line 9
Notice: A session had already been started – ignoring session_start() in /home/—–/public_html/—–/wp-content/plugins/wp-embed-youtube/api_youtube.php on line 2
Warning: Cannot modify header information – headers already sent by (output started at /home/nsjxeszk/public_html/site/wp-includes/functions.php:2962) in /home/—–/public_html/—–/wp-content/plugins/easy-digital-downloads/includes/libraries/class-wp-session.php on line 123
Notice: register_sidebar_widget is deprecated since version 2.8! Use wp_register_sidebar_widget() instead. in /home/—–/public_html/—–/wp-includes/functions.php on line 2841
Notice: bbp_setup_current_user was called incorrectly. The current user is being initialized without using $wp->init(). Please see Debugging in WordPress for more information. (This message was added in version 2.3.) in /home/—–/public_html/—–/wp-includes/functions.php on line 2962
Notice: Undefined variable: widget_ops in /home/—–/public_html/—–/wp-content/plugins/linkroll/linkroll.php on line 15
Notice: Use of undefined constant wp_cumulus_widget – assumed ‘wp_cumulus_widget’ in /home/—–/public_html/—–/wp-cumulus.php on line 375
Notice: register_sidebar_widget is deprecated since version 2.8! Use wp_register_sidebar_widget() instead. in /home/—–/public_html/—–/wp-includes/functions.php on line 2841
Notice: register_widget_control is deprecated since version 2.8! Use wp_register_widget_control() instead. in /home/—–/public_html/—–/wp-includes/functions.php on line 2841
Do I need to disable or get rid of these plugins?