Blogroll DB error

My blog was working fine last night. This morning, I checked it (after not making any changes, though last night I did install the WordPress.com Stats plugin). I am getting a WordPress database error where my blogroll widget (which I renamed to “Links of Interest”) is supposed to be. If anyone can help me, I would appreciate it. The error is:

WordPress database error: [Got error 28 from storage engine]
SELECT * , IF (DATE_ADD(link_updated, INTERVAL 120 MINUTE) >= NOW(), 1,0) as recently_updated FROM wp_links LEFT JOIN wp_link2cat ON (wp_links.link_id = wp_link2cat.link_id) WHERE 1=1 AND link_visible = ‘Y’ AND ( category_id = 3 ) ORDER BY link_name ASC