EMERGENCY: Database Error in Dashboard

I get a database error in my dashboard under the Quick Press area, I think.

WordPress database error: [MySQL server has gone away]
UPDATE <code>wp_options</code> SET <code>option_value</code> = 'a:9:{i:0;b:0;s:31:\"leaguemanager/leaguemanager.php\";a:2:{i:0;O:19:\"LeagueManagerLoader\":5:{s:7:\"version\";s:5:\"3.6.3\";s:9:\"dbversion\";s:5:\"3.6.3\";s:6:\"bridge\";b:0;s:10:\"adminPanel\";N;s:7:\"options\";a:4:{s:7:\"version\";s:5:\"3.6.3\";s:9:\"dbversion\";s:5:\"3.6.3\";s:10:\"textdomain\";s:10:\"basketball\";s:6:\"colors\";a:2:{s:7:\"headers\";s:7:\"#dddddd\";s:4:\"rows\";a:2:{i:0;s:7:\"#ffffff\";i:1;s:7:\"#efefef\";}}}}i:1;s:9:\"uninstall\";}s:25:\"adminimize/adminimize.php\";s:24:\"_mw_adminimize_deinstall\";s:29:\"nextgen-gallery/nggallery.php\";a:2:{i:0;s:9:\"nggLoader\";i:1;s:9:\"uninstall\";}s:33:\"theme-my-login/theme-my-login.php\";s:24:\"theme_my_login_uninstall\";s:29:\"visitor-maps/visitor-maps.php\";s:26:\"visitor_maps_unset_options\";s:35:\"si-contact-form/si-contact-form.php\";s:24:\"si_contact_unset_options\";s:39:\"si-captcha-for-wordpress/si-captcha.php\";s:24:\"si_captcha_unset_options\";s:37:\"paypal-donations/paypal-donations.php\";s:26:\"paypal_donations_deinstall\";}' WHERE <code>option_name</code> = 'uninstall_plugins'
WordPress database error: [MySQL server has gone away]
SELECT ID FROM wp_posts WHERE post_content LIKE '%[mingleforum]%' AND post_status = 'publish' AND post_type = 'page'
WordPress database error: [MySQL server has gone away]
SELECT option_value FROM wp_options WHERE option_name = 'IWG_RoleMan_Spaces_in_Caps' LIMIT 1
WordPress database error: [MySQL server has gone away]
SELECT option_value FROM wp_options WHERE option_name = 'stats_url' LIMIT 1
WordPress database error: [MySQL server has gone away]
SELECT form_id FROM wp_tdomf_table_forms ORDER BY form_id ASC
WordPress database error: [MySQL server has gone away]
SELECT option_value FROM wp_options WHERE option_name = 'graphene_light_header' LIMIT 1
WordPress database error: [MySQL server has gone away]
SELECT option_value FROM wp_options WHERE option_name = 'graphene_slider_disable' LIMIT 1
WordPress database error: [MySQL server has gone away]
UPDATE wp_loginlog SET active = '2011-01-08 06:30:55' WHERE username=''

Sometimes when I login, it redirects me to the install.php page and says

You appear to have already installed WordPress. To reinstall please clear your old database tables first.

Actually, it’s been doing it a lot lately, unless I bypass it by going through an old url such as http://dcbluestar.com/wp-admin/plugins.php?deactivate=true&plugin_status=all&paged=1

What can I do?