Sync fails with curl error

Whenever I try and do the initial sync I get the following error after 9 files — nothing appears in my amazon bucket at all. I tried doing a “Verify” on the settings page and it came back OK. Do I have something misconfigured?

Syncing [1/4424] wp-content/themes/samovar/style.css skipped, already synced
Syncing [2/4424] wp-content/themes/samovar/live_weil_rose_jacobs.jpg skipped, already synced
 Syncing [3/4424] wp-content/themes/samovar/editor-style.css skipped, already synced
 Syncing [4/4424] wp-content/themes/samovar/style-ie6.css skipped, already synced
 Syncing [5/4424] wp-content/themes/samovar/style.css skipped, already synced
Syncing [6/4424] wp-content/themes/samovar/live_weil_rose_jacobs.jpg skipped, already synced
 Syncing [7/4424] wp-content/themes/samovar/editor-style.css skipped, already synced
 Syncing [8/4424] wp-content/themes/samovar/style-ie6.css skipped, already synced
 Syncing [9/4424] wp-content/themes/samovar/pdfs/September2010.jpgcURL resource: Resource id #681; cURL error: select/poll returned error (55)