Do not succeed in subscribing to iTunes Match because the process simply stops on "uploading remaining songs and artwork".

My Mac runs OS 10.5.8 and the iTunes is 10.6.1.

I have a U.S. account on iTunes and "purchased" iTunes Match.

But the Match process begins by (successfully) 1. gathering info on my library; and 2. matching my music to the store.

But when it gets to 3. Uploading Artwork and Remaining Songs, the process slowly begins and then stops on 92 of 307 items to be uploaded. Have tried this twice, and it always stops here for over 24 hours.

Thanks in advance for the help