the logs.txt file for the failed upload reads:

68.126.192.52 2009-06-30 02:13:36 MSG: Upload complete. Saving files...
68.126.192.52 2009-06-30 02:13:36 ERROR: No files uploaded

file upload seems to go all the way to 100% and then a pop up window comes up with the following message:

ERROR: No files uploaded

so far I've been able to upload small files like images and documents but bigger files keep getting that message.

any suggestions/advice?