Hello,
after months of work, I'm proud to announce SynoDS ! 
SynoDS is an iPhone and iPod Touch native client for Synology's Download Station :mrgreen:
It should be available soon on the AppStore, but until then you can check the video presentation of the application here :
Feature list :
- Configure several servers and choose the one to connect to
- Support standard and SSL connections
- Show the list of download tasks running on the server
- Sort the download tasks by status, name, progress or size
- You can filter (search) in your download task
- You can start/pause/delete your download tasks
- You can see details about the download task and configure options
- You can add a download task from URL (and can use a specific username/password)
- You can use the embedded browser to browse to some files and tap on a download link to add a download task on your server (Browser is featuring bookmark support !)
- Compatible with socks and http proxy connections
- Nice iPhone look&feel with Pull to refresh feature and swipe to delete
- Landscape mode
- Support for iPhone 4's Retina Display
- Compatible with iOS3.x and iOS4.x devices
This thread will be a place to discuss about the application, discuss about issues and wanted features 
I hope you'll enjoy it !
Sylver