Please do not double post. Once is enough. Your second post has been deleted.
What OS are you running on the 8300? You need OS 4.6 and above to use a 32 GB card on the 8300 series. The latest available is OS 4.5. See the sticky at the top of the 8300 section. What type and size Media Card can I use in my device? - BlackBerryFAQ