Problema com Jquery

não tem conflito cara, apenas importe o jQuery uma única vez. Só isso.

Mesmo importando somente uma vez o erro acontece,(já tinha conhecimento sobre isso).

e oq aparece no teu console de erros ?

ctrl+shift+j no firefox

No Firefox:

TypeError: $ is not a function @ http://127.0.0.1/perfil/js/fancybox/funcoes.js:1

Chrome:

Uncaught TypeError: Property '$' of object [object Object] is not a function

poste aqui todas as suas tags scripts, o html de com vc chama elas.

<script src="http://127.0.0.1/js/jquery-1.6.4.js" type="text/javascript"></script>
<script type="text/javascript" src="http://127.0.0.1/js/chat.js"></script>

	<script type="text/javascript" src="http://127.0.0.1/perfil/js/fancybox/lib/jquery.mousewheel-3.0.6.pack.js"></script>

	<!-- Add fancyBox main JS and CSS files -->
	<script type="text/javascript" src="http://127.0.0.1/perfil/js/fancybox/jquery.fancybox.js?v=2.1.4"></script>
	<link rel="stylesheet" type="text/css" href="[http://127.0.0.1/perfil/js/fancybox/jquery.fancybox.css?v=2.1.4](http://127.0.0.1/perfil/js/fancybox/jquery.fancybox.css?v=2.1.4)" media="screen" />

	<script type="text/javascript" src="http://127.0.0.1/perfil/js/fancybox/funcoes.js"></script>

Creio eu que problema nesse script.

$(document).ready(function() {
 /*
 * Simple image gallery. Uses default settings
 */

 $('.fancybox').fancybox();

 /*
 * Different effects
 */

 // Change title type, overlay closing speed
 $(".fancybox-effects-a").fancybox({
 helpers: {
 title : {
 type : 'outside'
 },
 overlay : {
 speedOut : 0
 }
 }
 });

 // Disable opening and closing animations, change title type
 $(".fancybox-effects-b").fancybox({
 openEffect : 'none',
 closeEffect	: 'none',

 helpers : {
 title : {
 type : 'over'
 }
 }
 });

 // Set custom style, close if clicked, change title type and overlay color
 $(".fancybox-effects-c").fancybox({
 wrapCSS : 'fancybox-custom',
 closeClick : true,

 openEffect : 'none',

 helpers : {
 title : {
 type : 'inside'
 },
 overlay : {
 css : {
 'background' : 'rgba(238,238,238,0.85)'
 }
 }
 }
 });

 // Remove padding, set opening and closing animations, close if clicked and disable overlay
 $(".fancybox-effects-d").fancybox({
 padding: 0,

 openEffect : 'elastic',
 openSpeed : 150,

 closeEffect : 'elastic',
 closeSpeed : 150,

 closeClick : true,

 helpers : {
 overlay : null
 }
 });

 /*
 * Button helper. Disable animations, hide close button, change title type and content
 */

 $('.fancybox-buttons').fancybox({
 openEffect : 'none',
 closeEffect : 'none',

 prevEffect : 'none',
 nextEffect : 'none',

 closeBtn : false,

 helpers : {
 title : {
 type : 'inside'
 },
 buttons	: {}
 },

 afterLoad : function() {
 this.title = 'Image ' + (this.index + 1) + ' of ' + this.group.length + (this.title ? ' - ' + this.title : '');
 }
 });

 /*
 * Thumbnail helper. Disable animations, hide close button, arrows and slide to next gallery item if clicked
 */

 $('.fancybox-thumbs').fancybox({
 prevEffect : 'none',
 nextEffect : 'none',

 closeBtn : false,
 arrows : false,
 nextClick : true,

 helpers : {
 thumbs : {
 width : 50,
 height : 50
 }
 }
 });

 /*
 * Media helper. Group items, disable animations, hide arrows, enable media and button helpers.
 */
 $('.fancybox-media')
 .attr('rel', 'media-gallery')
 .fancybox({
 openEffect : 'none',
 closeEffect : 'none',
 prevEffect : 'none',
 nextEffect : 'none',

 arrows : false,
 helpers : {
 media : {},
 buttons : {}
 }
 });

 /*
 * Open manually
 */

 $("#fancybox-manual-a").click(function() {
 $.fancybox.open('1_b.jpg');
 });

 $("#fancybox-manual-b").click(function() {
 $.fancybox.open({
 href : 'iframe.html',
 type : 'iframe',
 padding : 5
 });
 });

 $("#fancybox-manual-c").click(function() {
 $.fancybox.open([
 {
 href : '1_b.jpg',
 title : 'My title'
 }, {
 href : '2_b.jpg',
 title : '2nd title'
 }, {
 href : '3_b.jpg'
 }
 ], {
 helpers : {
 thumbs : {
 width: 75,
 height: 50
 }
 }
 });
 });

 });

Resolvido, o problema estava com a versão da Jquery.