Is this within a mySQL DB? And ist that happening "automatically" i.e. without PHP code?
Then this is what your column is set up like atm:
`yourCol` timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP
And this is what you actually wanted:
`yourCol` timestamp NOT NULL default CURRENT_TIMESTAMP
And this is the SQL statement to fix it:
ALTER TABLE `yourTable` CHANGE `yourCol` `yourCol` timestamp NOT NULL default CURRENT_TIMESTAMP;
Note that you need to repeat the field name.
regards
Bjom