UML tool is very, very, very slow.

I use NetBean 5.5Bete EE and UML tool is too slow. Openning the class diagram (with 8 classes and 1 note) takes about 10 sec, but ther is more!
Scrolling this diagram takes 1 sec for one line and 100% CPU time!!!
Is there any solution?
P.S. I've posted similar topic see http://swforum.sun.com/jive/thread.jspa?threadID=98899 but I decided to post it on this forum, too, because Java Studio and NetBeans use this same UML tools./i]

Hi.
This is presumably the same problem mentioned in this other post on this forum:
http://swforum.sun.com/jive/thread.jspa?threadID=96551&tstart=0
I am seeing an exception in the log -- I am running the 3GHz P-IV, 1GB RAM, Win XP, and it's a laptop (desktop processor) with an NVidia GeForce FX Go5200 graphics. This is a fresh JSE8 install, and there are 3 sessions in the log. The first session does not log this exception. I ran the update manager after that session, and the sessions after the update log this exception. Does it mean anything?:
java.lang.ClassNotFoundException: org.netbeans.modules.uml.core.typemanagement.PickListManager
 at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:151)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
 at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
 at java.lang.Class.forName0(Native Method)
 at java.lang.Class.forName(Class.java:164)
 at com.embarcadero.uml.core.QueryManager.createUpdaters(QueryManager.java:482)
 at com.embarcadero.uml.core.QueryManager.gatherUpdaters(QueryManager.java:282)
 at com.embarcadero.uml.core.QueryManager.verifyCacheContents(QueryManager.java:592)
 at com.embarcadero.uml.core.QueryManager.establishQueryCache(QueryManager.java:537)
 at com.embarcadero.uml.core.QueryManager.establishCache(QueryManager.java:1121)
 at com.embarcadero.uml.core.Application.openProject(Application.java:203)
 at com.embarcadero.uml.ui.products.ad.applicationcore.ADApplication.openProject(ADApplication.java:153)
 at com.sun.tools.ide.uml.project.UMLProjectHelper.initializeProject(UMLProjectHelper.java:224)
 at com.sun.tools.ide.uml.project.UMLProjectHelper.getProject(UMLProjectHelper.java:168)
 at com.sun.tools.ide.uml.project.UMLProject$ProjectOpenedHookImpl.retreiveProject(UMLProject.java:452)
 at com.sun.tools.ide.uml.project.UMLProject$ProjectOpenedHookImpl.verifyProjectIsInitialized(UMLProject.java:474)
 at com.sun.tools.ide.uml.project.UMLProject$ProjectOpenedHookImpl.projectOpened(UMLProject.java:510)
 at org.netbeans.spi.project.ui.ProjectOpenedHook$1.projectOpened(ProjectOpenedHook.java:49)
 at org.netbeans.modules.project.ui.OpenProjectList.notifyOpened(OpenProjectList.java:404)
 at org.netbeans.modules.project.ui.OpenProjectList.getDefault(OpenProjectList.java:121)
 at org.netbeans.modules.project.ui.OpenProjectsTrampolineImpl.<init>(OpenProjectsTrampolineImpl.java:35)
 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
 at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
 at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
 at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
 at java.lang.Class.newInstance0(Class.java:350)
 at java.lang.Class.newInstance(Class.java:303)
 at org.openide.util.lookup.MetaInfServicesLookup$P.getInstance(MetaInfServicesLookup.java:346)
 at org.openide.util.lookup.AbstractLookup.lookup(AbstractLookup.java:298)
 at org.openide.util.lookup.ProxyLookup.lookup(ProxyLookup.java:140)
 at org.netbeans.modules.project.uiapi.Utilities.getOpenProjectsTrampoline(Utilities.java:45)
 at org.netbeans.api.project.ui.OpenProjects.<init>(OpenProjects.java:52)
 at org.netbeans.api.project.ui.OpenProjects.<clinit>(OpenProjects.java:47)
 at org.netbeans.modules.editor.bookmarks.EditorBookmarksModule.restored(EditorBookmarksModule.java:58)
 at org.netbeans.core.modules.NbInstaller.loadCode(NbInstaller.java:322)
 at org.netbeans.core.modules.NbInstaller.load(NbInstaller.java:240)
 at org.netbeans.core.modules.ModuleManager.enable(ModuleManager.java:869)
 at org.netbeans.core.modules.ModuleList.installNew(ModuleList.java:382)
 at org.netbeans.core.modules.ModuleList.trigger(ModuleList.java:316)
 at org.netbeans.core.modules.ModuleSystem.restore(ModuleSystem.java:253)
 at org.netbeans.core.NonGui.run(NonGui.java:355)
 at org.netbeans.core.Main.run(Main.java:185)
 at org.netbeans.core.NbTopManager.getNbTopManager(NbTopManager.java:241)
 at org.netbeans.core.NbTopManager.get(NbTopManager.java:190)
 at org.netbeans.core.Main.start(Main.java:311)
 at org.netbeans.core.TopThreadGroup.run(TopThreadGroup.java:90)
 at java.lang.Thread.run(Thread.java:595)

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I don't where to ask my question , so put it on here .
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HJava wrote:
1) I am looking for a free UML tool to handle the db and some java classGoogle "free uml" or something smarter.
2) is Microsoft Visio professional is a UML too ?It's more than that.

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