I just found this thread and would like to clarify a few things:
1) Ubuntu One is not included by default in the latest dev-only iso of Helena
2) There will not be a default service since it's now obvious we can't rely on them
3) However, there has been at least one community member (thanks ikey

) offering a service, so when it's set up will become available *as an option* through the normal update methods
4) I don't know exactly how Ubuntu One works beyond the folder syncing, so it's not directly supported in Helena, but could be in future (I'll add it as a planned feature). It's probable that it uses an existing protocol (e.g. ftp/sftp) in which case you can setup mintUpload appropriately. Alternatively if you run an ftp or ssh server on your machine anyway, then you can setup mintupload with "localhost" as the hostname, using the path to the ubuntu one service's folder, to "upload" a file via the normal syncing method (assuming the ubuntu one service is still running in the background).
5) mintupload has been vastly re-arranged to a new form for Helena - a tray applet and a services manager. I'm planning to get the old interface available again as an option (which may be necessary for the CEs) but don't know when that'll be possible.
6) checkout
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