glEnd memory error

Gaming and Visualization Technologies APIs OpenGL
1

When I run an application with Application Verifier (PageHeap) I get a memory error in glEnd.

Tested: VS2008 x64 (W7) with drivers 306.97 and 310.90

Is it a driver bug ?

My code:
glBegin(GL_POINTS);
glVertex3f(0.f, 0.f, 1.f);
glEnd();