My central air worked for a day and a half and then stopped :-(
Heating before then worked just fine...
Cold air is not blowing out (possible freon leak) but
What perplexes me is, the air is not blowing storng enough from the vents.. it did while heating was on...
What do u think?

Please check the following things:

The blower motor is running at full force and the impeller (fan) is not slipping, particularly if the motor is attached to the fan via a belt.

Next, check the coils to see if they are iced over. Also check the copper tubing on the outside unit to see if that is iced over.

If you see ice, I don't know that you have a leak, but you certainly have an air flow problem.

Also, check the air filter to make sure it is clean. If it is not, then get a clean filter and see if that improves the airflow.