sidebar news show the same text

Hi,

In my sidebar, I ve got a list with news

<div class="c751 ml10">
						<h5><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></h5><br />
						<p><?php echo strip_tags(get_the_excerpt()); ?></p>
					</div>

My problem is that they show the same text and this text is some lines from the pages text. In the home’s sidebar this works properly but I checked and there is no difference in the code.

Do you know how I can change this and make them show their text?

Also I ‘d like to know if it’s possible to reduce the number of text lines that they have know. Is this possible?

Thanks,
Dinos