chkservd on server status: hang

am having this messages concerning my serve icontact_sendim: unable to send an IM for xxxxxxxx while trying to sent to xxxxxxxx; please review the error log for details. Original Message: The chkservd sub-process with pid 3247 ran for 301 seconds. This sub-process was terminated when it exceeded the time allowed between checks, which is 300 seconds. To determine why, you can check /var/log/chkservd.log and /usr/local/cpanel/logs/tailwatchd_log. You likely received this notification as a symptom of a larger problem. If your server is experiencing a high load, we recommend investigating the cause. If you continue to receive this notification, it is likely that your system is unable to handle demand or a misconfiguration is delaying restarts. If you are sure that no misconfigurations exist, you should consider gradually increasing the following options in WHM's "Tweak Settings" feature: "The number of times ChkServd will allow a previous check to complete before terminating the check" and/or "The number of seconds between ChkServd service checks". Server: xxxxxxx Primary IP: xx.xx.xx.xx. Service: chkservd Notification Type: hang Memory Information: Used=924MB Available=70MB Installed=996MB Load Information: 266.63 182.68 102.00 Uptime: 1 days, 22 hours, 40 seconds IOStat Information: avg-cpu: %user %nice %system %iowait %steal %idle 29.67 0.13 6.38 0.28 0.00 63.55 Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn sda 13.58 347.78 171.83 43197750 21343074 dm-0 13.83 181.25 85.40 22513044 10607512 dm-1 31.62 166.52 86.46 20683456 10738984 ChkServd Version: 15.6 please, what should i do