Large Files using the Web Services API
From AlfrescoWiki
Large Files (e.g. >100MB) cannot be uploaded using the Alfresco Web Services API (as of v1.4)
The Write call overflows socket buffers and the AsyncWrite call tried to convert your file from a binary byte array in memory into XML Base64 Encoding cause memory to be consumed and exhausted.
interesting article
http://www.computerworld.com/developmenttopics/development/story/0,10801,79698,00.html

