QUOTE(glenny1 @ Apr 18 2005, 01:14 PM)
Ive been away for the weekend,and when i got up this morning ,i noticed my lights were on(timer knackerd).Its been a few days,will this do my babys any harm(2 weeks old)...Thanks......
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A bit confused maybe, but not damaged or harmed in any way

Failing timers is something everyone needs to look out for, even when using a contactor relay to "switch" your ballast, (the cheaper "segmental" timers still fail).
But now you got it sussed, set it up (again) and put the poor old thing back into the same photo-period you had your lights set to, and in a couple of days all will be fine.
As soon as possible I would recommend getting a contactor, to stop the terminals in your "new timer" welding up and causing this problem in the future!