Comment 18 for bug 586910

I also have this issue. It's really annoying! :)

uname info: Linux statum-laptop 2.6.32-24-generic #41-Ubuntu SMP Thu Aug 19 01:12:52 UTC 2010 i686 GNU/Linux

Eclipse 3.5.2 Build id: 20100218-1602

Sun JDK 1.6.20 (32-bit)

My command line:
eclipse -vm /usr/lib/jvm/java-6-sun/bin/java -Xmx1024m -XX:MaxPermSize=256m

Other folks have been reporting GTK version.. here is my dpkg output:
ii libgtk2.0-0 2.20.1-0ubuntu2

Let me know if you need any info or want me to try something.