The problem can be worked around by killing the syncdaemon and then editing your ~/.config/ubuntuone/syncdaemon.conf file to comment out the following two lines in the [bandwidth_throttling] section:
read_limit = 0
write_limit = 0
The newer version of the sync daemon doesn't like those limits to be zero even when bandwidth throttling is disabled.
The problem can be worked around by killing the syncdaemon and then editing your ~/.config/ ubuntuone/ syncdaemon. conf file to comment out the following two lines in the [bandwidth_ throttling] section:
read_limit = 0
write_limit = 0
The newer version of the sync daemon doesn't like those limits to be zero even when bandwidth throttling is disabled.