Flock has release a minor “Maintenance Patch” with version 0.7.10.
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.9) Gecko/20070130 Firefox/1.5.0.9 Flock/0.7.10.1

The 0.7.10 Flock Maintenance Patch has several enhancements and bug fixes including:

• Added support for Blogger Beta auto detection
• Added a progress bar when adding photos to the Photo Uploader
• Added support for .bmp type photos
• Open or closed state of the photobar is preserved across Flock restarts
• Better error messaging and error handling when uploading photos to Photobucket.

News Source: Flock Release Notes