Win7, using version 3.7.1.
I connect to an alias. I click on the "Objects" tab. I can drill down into the entries in this tree.
I click in the search field at the top of the Objects table. I enter anything in the field, not clicking the magnifier yet. At this point, everything is still ok. I can even navigate to other windows, expand the objects tree, et cetera.
Now I click the magnifier icon next to the search field. Dead SQuirreL. It's not spinning, just completely hung. Even the red X to close the window just flashes and does nothing. I have to kill the process manually to close it.
This is easily repeatable.
I checked the squirrel log file. The only thing of any real significance was the following:
2016-09-22 13:58:48,257 [AWT-EventQueue-1] ERROR net.sourceforge.squirrel_sql.plugins.laf.jtattoo.JTattooLafData - Unable to load LAF class (com.jtattoo.plaf.texture.TextureLookAndFeel):com.jtattoo.plaf.texture.TextureLookAndFeel
java.lang.ClassNotFoundException: com.jtattoo.plaf.texture.TextureLookAndFeel
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at net.sourceforge.squirrel_sql.fw.util.MyURLClassLoader.findClass(MyURLClassLoader.java:209)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at net.sourceforge.squirrel_sql.plugins.laf.jtattoo.JTattooLafData.putClass(JTattooLafData.java:82)
I can't reproduce the problem.
Which database do you use.
How many catalogs/schemas with how many objects (tables, views, ...) are in your database. If there are a lot please configure your Alias properties to load less objects and see if the problem persists.