Dreamweaver stops BSNL broadband internet connection in vista

I had installed Dreamweaver CS 3 on my Windows Vista Ultimate edition.
I noticed that it is stopping to connect with internet using BSNL's
broadband connection. I faced this problem so many times. When i
uninstall it from the system the internet connection is getting
started to work normally. Is this the bug in Dreamweaver CS3 or
Windows Vista? Do anyone has any idea about this issue? or do anyone
has any solution for this problem?