I am running the plugin for the first time trying to do a first backup.
My PHP version is 3.5.5.
I have already checked the DISABLE_WP_CRON option and added the lines to the .htaccess file:
Allow from All
However, when I start a back up a get the following messages (from the log):
10:51:07: Approximately unknown% complete. View uploaded files»
10:51:01: Backing up WordPress path at (<my path hidden for this post>).
10:50:45: Your time limit is 300 seconds and your memory limit is 256M
10:50:45: Backup started on Monday February 4, 2013.
The plugin starts copying some files in the dropbox folder (4 files) and then seems to hang without progress.