Problem with sharp edges after subdivision surface modifier everybody. I I'm newbie in Blender(obviously=) )
I still got sharp edges after subdivision surface modifier.

New "smooth" surface (2) kinda attached to some vertices (1) of the mesh, creating ugly vertical edge.
Upper part of lightbulb (which was used to creat the lower by "E", RMB, P) have no such problems. There is no double vertices and no Ngons. I've added few horizontal loopcuts(ctrl+R) to sharpen horizontal edges of the mesh, but thats all. I did nothing to vertical edges.  Please help me. This  question drives me crasy. Thanks in advance.
Looks like I've found an answer. Don't know how, but all normals were mixed up, so modifier went crazy. Shift+N solved the problem. 

Now I have the habit of checking normals before using any modifiers and posting simple questions =)).