It seems like you insert image links instead of images - atm the code looks like:
<a href="http://kunticonsultores.com/wp-content/uploads/2011/09/welcome1.jpg"><img class="aligncenter size-full wp-image-246" title="welcome" src="http://kunticonsultores.com/wp-content/uploads/2011/09/welcome1.jpg" alt="" width="900" height="240" /></a>
<a href="http://kunticonsultores.com/wp-content/uploads/2011/09/Smiling-Person-900x2401.jpg"><img class="aligncenter size-full wp-image-247" title="Smiling-Person-900x240" src="http://kunticonsultores.com/wp-content/uploads/2011/09/Smiling-Person-900x2401.jpg" alt="" width="900" height="240" /></a>
<a href="http://kunticonsultores.com/wp-content/uploads/2011/09/success1.jpg"><img class="aligncenter size-full wp-image-248" title="success" src="http://kunticonsultores.com/wp-content/uploads/2011/09/success1.jpg" alt="" width="900" height="240" /></a>
- use following code instead:
<img class="aligncenter size-full wp-image-246" title="welcome" src="http://kunticonsultores.com/wp-content/uploads/2011/09/welcome1.jpg" alt="" width="900" height="240" /> <img class="aligncenter size-full wp-image-247" title="Smiling-Person-900x240" src="http://kunticonsultores.com/wp-content/uploads/2011/09/Smiling-Person-900x2401.jpg" alt="" width="900" height="240" /> <img class="aligncenter size-full wp-image-248" title="success" src="http://kunticonsultores.com/wp-content/uploads/2011/09/success1.jpg" alt="" width="900" height="240" />