[RESOLVED] Memory leak caused by drawing?

[opus]

I'm observing a memory leak in my project and I do believe it is caused by the way I'm drawing.

My present usage was:

Private Sub MyPictureBox_Paint(ByVal sender As Object, ByVal e As System.Windows.forms.PaintEventArgs) Handles MyPictureBox.Paint
PictureBox_DoPaint(e.Graphics)
End Sub

Private Sub PictureBox_DoPaint(ByVal g As Graphics)
'some Paintings
Lines_DoPaint(g, MyPen, Lines)
End Sub

Private Sub Lines_DoPaint(ByVal g As Graphics, ByVal MyPen as Pen, ByVal Lines() as PointF )
g.DrawLine(MyPen,(g, MyPen, Lines)
End Sub

Using the Subs like that, the memory usage is steadily increasing.
When changing the Subs "PictureBox_DoPaint" and "Lines_DoPaint" the have only ByRef arguments, the memory usage seems to be steady.
Was this (one of) the reason(s) for my memory leak?