<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; "><DIV><DIV>On May 30, 2007, at 12:03 AM, Kenward Vaughan wrote:</DIV><BR class="Apple-interchange-newline"><BLOCKQUOTE type="cite"><P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Monaco" size="4" style="font: 14.0px Monaco">BTW, I've found that selecting a chain the first time after opening a</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Monaco" size="4" style="font: 14.0px Monaco">pdb file causes the backgound to turn green (with envy?).<SPAN class="Apple-converted-space"> </SPAN>This clears</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Monaco" size="4" style="font: 14.0px Monaco">after a second chain selection...</FONT></P> </BLOCKQUOTE><BR></DIV><DIV>We haven't seen this behavior on any machine we have. It almost certainly is a graphics driver problem. You should check to see if you have the latest driver for your card. If you have a laptop, you should check your machine's manufacturer's web site -- otherwise check the graphic card's manufacturer's web site.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>If it turns out that you do have the latest driver, it may be possible to improve things by changing settings on your card. I can provide some guidance if it turns out you need to do this.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>--Eric</DIV><DIV><BR><DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "> Eric Pettersen</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "> UCSF Computer Graphics Lab</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "> <A href="mailto:pett@cgl.ucsf.edu">pett@cgl.ucsf.edu</A></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "> <A href="http://www.cgl.ucsf.edu">http://www.cgl.ucsf.edu</A></DIV></DIV><BR><DIV><DIV><BR class="khtml-block-placeholder"></DIV></DIV></DIV></BODY></HTML>