Column default value wont (keep) update
Dooh my mistake, should be:

``` python
time = DateTimeField(default=datetime.now)
```

In previous I pass the now() value, not passing function as arg.

Sorry to pollute

Hi, I have the following model which have a datetime field with default value=datetime.now()

``` python
from datetime import datetime

class ATable(BaseModel):
    time = DateTimeField(default=datetime.now())
    customer = CharField()
```

Surprised when I create several records say:

``` python
ATable.create(customer='A')
# some delay
ATable.create(customer='B')
# some delay
ATable.create(customer='C')
```

The time (default) filled values was all the same: 2011-12-28 21:30:38.257 on all records
The time beeween record creation surelly in different time, at least microsecond and or second value

Perhaps a caching issue?

Thanks
