I also have a Fujitsu Esprimo u9200, updated it to Lucid Lynx and I still have this bug. The fix for the DSDT table as described at https://wiki.kubuntu.org/LaptopTestingTeam/Old/FujitsuEsprimoU9200 didn't work for me, although i changed the dsdt.dsl instead of the dsdt.aml, because there was no file called dsdt.aml. If you need any further information, just ask.
I also have a Fujitsu Esprimo u9200, updated it to Lucid Lynx and I still have this bug. The fix for the DSDT table as described at https:/ /wiki.kubuntu. org/LaptopTesti ngTeam/ Old/FujitsuEspr imoU9200 didn't work for me, although i changed the dsdt.dsl instead of the dsdt.aml, because there was no file called dsdt.aml. If you need any further information, just ask.