Hi,
It appears that your PHP upload is limited to 8388608 bytes.
To increase that value type the following line at the console :
# /sbin/e-smith/db configuration setprop php UploadMaxFilesize SIZE
# /sbin/e-smith/signal-event console-save
Where
SIZE = 10M
Or higher.
This tips was found
HEREIt's in french but can be very usefull.
regards,