What does this mean?

Warning: mysql_query(): supplied argument is not a valid MySQL-Link resource in /home/industri/public_html/ConstructionConnection/dolph/flash/modules/global/inc/db.inc.php on line 48

Warning: mysql_query(): supplied argument is not a valid MySQL-Link resource in /home/industri/public_html/ConstructionConnection/dolph/flash/modules/global/inc/db.inc.php on line 49

Warning: mysql_query(): supplied argument is not a valid MySQL-Link resource in /home/industri/public_html/ConstructionConnection/dolph/flash/modules/global/inc/db.inc.php on line 50

Warning: mysql_query(): supplied argument is not a valid MySQL-Link resource in /home/industri/public_html/ConstructionConnection/dolph/flash/modules/global/inc/db.inc.php on line 51

Database access error.

Warning: mysql_error(): supplied argument is not a valid MySQL-Link resource in /home/industri/public_html/ConstructionConnection/dolph/flash/modules/global/inc/db.inc.php on line 71

Description: Database access error.

Warning: mysql_error(): supplied argument is not a valid MySQL-Link resource in /home/industri/public_html/ConstructionConnection/dolph/flash/modules/global/inc/db.inc.php on line 71

Description: Database access error.

Warning: mysql_error(): supplied argument is not a valid MySQL-Link resource in /home/industri/public_html/ConstructionConnection/dolph/flash/modules/global/inc/db.inc.php on line 71

Description:

Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource in /home/industri/public_html/ConstructionConnection/dolph/flash/modules/video_comments/inc/classes/BxDolCronVideoComments.php on line 67

And how do i fix it?

not sure but looks like DB access error. Check the DB user and pass in inc.header.php file.

Any solution to this... I'm experiencing the same problem with version 7.0.9 (new install).  I can only guess it's due to a recent module I installed since I did not see it initially.

It means Dolphin can't connect to the MySQL server.  Might be caused by too many requests from the cron job.