Buffer Results not logical

Discussion created by rr1040 on Jan 17, 2011
Latest reply on Jan 21, 2011 by csny490
I am buffering a large polyline dataset (streets).  Very often when I run the buffer I get large polygons that are created as if the buffer was large enough between the two lines to create one polygon.  The buffer, however, is less than the distance it would take to close off the polygon.  The picture will make more sense.

The red is the original polyline.  Notice the large closed off polygons.  It seems like there are times when it runs without this issue.

Any thoughts?