old QueryString remains, help

 Hi All.
I have a  page called "find.aspx" that has a number of hyperlinks that go like:
<a href="search1.aspx?UC=1">
<a href="search1.aspx?UC=2">
Now on the search1.aspx page, i have similar links too i.e.
<a href="search1.aspx?UC=1">
<a href="search1.aspx?UC=2">
As you can see, the links are both for the search1.aspx page. On the first instance, i click the hyperlink on the  "find.aspx" page which goes to the "search1.aspx" page correctly. i can request querystring from the code and it retrieves the correct results. Now, i click on a link on the "search1.aspx" page, it goes into the code again but for some reason it still gets the old querystring data.
Any ideas?

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