If you have compiz enabled it often causes this problem with ATI cards.  Try turning it off.<div><br></div><div>Josh<br><br><div class="gmail_quote">On Wed, Jun 16, 2010 at 7:23 PM, Narasimhan Rajagopal <span dir="ltr">&lt;<a href="mailto:narasimhan1990@yahoo.co.in">narasimhan1990@yahoo.co.in</a>&gt;</span> wrote:<br>

<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div><div style="font-family:times new roman,new york,times,serif;font-size:12pt"><div>the cpu usage problem is resolved when i installed ati proprietary drivers(via system-&gt;administration-&gt;hardware drivers). and there is no delay in stage. but now there is another problem. the stage and rviz screen flickers and makes it almost impossible to comprehend whats been displayed in the screens. <br>

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