Why Does This Happen?

[Beverly]

Over the last few days, I've occasionally been getting the following message when responding to email notifications of a thread I'm subscribed to. Is anybody else experiencing this? What's going on?

phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1114 The table 'canreefsessions' is full

INSERT INTO canreefsessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('b878d97b16c1a705e931bb53f37c967f', 526, 1123867273, 1123867273, 'a1b808f1', 8, 1)

Line : 158
File : sessions.php