I've just installed and run the plugin using all of the defaults.
The plugin reported a Internal server error but on checking the backup folder on the server there is a 90Mb backup file which would be about right for my website. Listed below is the log file report for the backup.
regards
Kev Lewis
Preset: full backup
Schedule: manually
WordPress Version: 2.3.2
BackUpWordPress Version: 0.4.5
## January 10, 2008 15:02:51: BackUpWordPress starting at January 10, 2008 15:02:51
## January 10, 2008 15:02:51: BackUpWordPress using Preset full backup
## January 10, 2008 15:02:51: BackUpWordPress temporary Directory '/websites/*.removed.*/wordpress/wp-content/backup/2008-01-10-15-02-51' created
## January 10, 2008 15:02:51: BackUpWordPress temporary Directory '/websites/*.removed.*/wordpress/wp-content/backup/2008-01-10-15-02-51/wordpress_files' created
## January 10, 2008 15:02:51: MySQL server connected successfully January 10, 2008 15:02:51
## January 10, 2008 15:02:51: sql-dump for wp_comments created January 10, 2008 15:02:51
## January 10, 2008 15:02:51: sql-dump for wp_links created January 10, 2008 15:02:51
## January 10, 2008 15:02:51: sql-dump for wp_ngg_album created January 10, 2008 15:02:51
## January 10, 2008 15:02:51: sql-dump for wp_ngg_gallery created January 10, 2008 15:02:51
## January 10, 2008 15:02:52: sql-dump for wp_ngg_pic2tags created January 10, 2008 15:02:52
## January 10, 2008 15:02:52: sql-dump for wp_ngg_pictures created January 10, 2008 15:02:52
## January 10, 2008 15:02:52: sql-dump for wp_ngg_tags created January 10, 2008 15:02:52
## January 10, 2008 15:02:52: sql-dump for wp_options created January 10, 2008 15:02:52
## January 10, 2008 15:02:52: sql-dump for wp_postmeta created January 10, 2008 15:02:52
## January 10, 2008 15:02:52: sql-dump for wp_posts created January 10, 2008 15:02:52
## January 10, 2008 15:02:52: sql-dump for wp_term_relationships created January 10, 2008 15:02:52
## January 10, 2008 15:02:52: sql-dump for wp_term_taxonomy created January 10, 2008 15:02:52
## January 10, 2008 15:02:52: sql-dump for wp_terms created January 10, 2008 15:02:52
## January 10, 2008 15:02:52: sql-dump for wp_usermeta created January 10, 2008 15:02:52
## January 10, 2008 15:02:52: sql-dump for wp_users created January 10, 2008 15:02:52
## January 10, 2008 15:02:52: SQL Dump created.
## January 10, 2008 15:04:26: 238 Temporary Subdirectories copied sucessfully
## January 10, 2008 15:04:26: 2119 Temporary Files copied sucessfully
## January 10, 2008 15:04:59: Failed to change backup archive permissions /websites/*.removed.*/wordpress/wp-content/backup/2008-01-10-15-02-51-full.tar.gz
## January 10, 2008 15:04:59: Archive File created/compressed successfully: /websites/*.removed.*/wordpress/wp-content/backup/2008-01-10-15-02-51-full.tar.gz
## January 10, 2008 15:05:15: 2360 Temporary Directories and Files deleted successfully
## January 10, 2008 15:05:15: No old BackUpWordPress Archives to delete
## January 10, 2008 15:05:15: No old BackUpWordPress Log Files to delete
## January 10, 2008 15:05:15: BackUpWordPress done at January 10, 2008 15:05:15
## January 10, 2008 15:05:15: BackUpWordPress was running for 144.29 Seconds