What Is Web-start.org?
If you browsers open http://web-start.org/ page when you launch them, that means that a browser hijacker got onto your computer. Browser hijacker is a program or a browser extension that changes some of the browser settings: start page, new tab page, homepage, search engine. To get rid of http://web-start.org/, you will need to delete the offending program, alter browser settings and clear browser shortcuts.
How to Remove Web-start.org
The easiest method to uninstall Web-start.org is to run an anti-malware program capable of detecting browser hijackers in general and Web-start.org in particular. You may try SpyHunter by Enigma Software; it has excellent detection rate when it comes to browser hijackers and other potentially unwanted programs (PUPs).