Problems uploading in the 3d warehouse

Hi everyone, I’m having some issues uploading my models on the 3d warehouse.
I’m trying to upload a house of 33Mb of size, but when i finish the upload I’ve got a error message that says that has been a communication problem between my pc and the warehouse and the file may be to big.
I’m having this problem only with big models.
Does anyone know the solution or has resolved this problem if he had it?
Thanks for the help.

uploads will timeout in 5 minutes, so if you’re on a really slow link, that may happen. Also, make sure you purge unused items in your model: Window->Model Info->Statistics->Purge Unused.

I always purge unused items. Thank you for your help