The major new features in Fetch 5.3 are:
* Improved compatibility with Mac OS X 10.5 Leopard
* Improved transfer window appearance on Mac OS X 10.5
* Redesigned toolbar and button icons with updated look for Mac OS X 10.5
* Added preference to turn off automatic decoding for all file types
* Digitally signed Fetch application, to reduce unnecessary keychain alerts
* Added support for Mac OS X 10.5's application-specific firewall
* Added support for uploading files using Copy and Paste
* Added support for copying files on servers using Copy and Paste
Other fixes and improvements in Fetch 5.3 are:
* Changed default download location to be the Downloads folder on Mac OS X 10.5
* Improved WebView's Get from Safari button to list all open tabs when used with Safari 3
* Improved recognition of URLs and paths entered in the Hostname field
* Fixed "Cannot convert from CFNumber to CFBoolean" errors when .Mac Preferences syncing is enabled on Mac OS X 10.5
* Specified that the Fetch Automator actions should be listed under the Internet category on Mac OS X 10.5
* Specified that the Fetch Cache file should not be backed up by Time Machine on Mac OS X 10.5
* Marked passwords saved in the keychain by Fetch as "Fetch passwords"
* Disabled FTP with KClient connections on Mac OS X 10.5, because KClient (Kerberos v4) is no longer supported on 10.5
* Fixed a problem that caused certain QuickTime movies to be stuffed on upload
* Fixed problems saving shortcut list documents to SMB volumes and Windows-based Apple File Protocol (AFP) servers
* Added large (512 × 512) application and document icons for better appearance in Finder's CoverFlow view
* Added alternate row shading to various windows for Mac OS X 10.5
* Added everyday language error messages for new Mac OS X 10.5 network error codes
* Updated transcript window to display information about new firewall settings in Mac OS X 10.5
* Fixed problems saving changes to Automator actions on Mac OS X 10.5
* Fixed error when adding Generate Fetch Item Report action to workflows on Mac OS X 10.5
* Fixed error when dismissing Delete Fetch Items action confirmation dialog on Mac OS X 10.5
* Fixed Set Fetch Item Permissions Automator action to allow you to set permissions to "000"
* Fixed incorrect icons of downloaded files in Downloads stack on Mac OS X 10.5
* Improved compatibility of FTPS uploads with CrushFTP servers
* Changed icon displayed for aliases (symlinks) on servers to a combination folder/file icon
* Fixed a problem where the file list contextual menu did nothing when Fetch was in the background
* Fixed crash when trying to update a corrupted widget
* Fixed problems parsing pasted URLs containing scheme names in all capitals
* Fixed rare assertion errors when opening Preferences window
* Improved behavior of URLs for VM servers
* Improved reliability of software update checks when the current version is up-to-date
* Updated "Rebuild Launch Services database" script to work on Mac OS X 10.5

WHAT'S NEW
Version 5.2.1:

* Fixed slow transfers when Fetch is in the foreground on some Macintosh models
* Improved the speed of the Shortcuts and Go menus when they contain many items
* Fixed droplet shortcuts so they can be used with accounts limited by parental controls (managed accounts)
* Added information about a droplet shortcut's destination to the Finder Get Info window
* Fixed problems with WebView and usernames that contain underscores
* Fixed errors when creating a WebView entry and a "View Source" window is open in Safari
* Improved compatibility with user-assigned keyboard shortcuts
* Fixed -981 and -982 errors when opening shortcut list windows more...