Using Java Plugin with Netscape 4.05 on Solaris 2.6 with JDK-1.2beta4-J, the vm will crash, citing a SIGSEGV 11* segmentation violation error, when you copy then paste text within an applet. The only error message given is in a Netscape window. There are some of these saved as gifs and attached to this bug report.

Steps to reproduce:
0) Install Netscape 4.05 by going to the Netscape website.
1) Install the latest Java Plugin (1.1.1) from their external website.
2) Turn off all Netscape security restrictions.
3) Have Plugin point to JDK-1.2beta4-J.
4) Load this page:
http://javaweb.eng.sun.com/~mukundm/BrowserTesting/BT1.2/Suite/QLhtml/24/2.html#Top
5) Wait for the applet to load. If it doesn't, keep reloading it until the page displays an applet.
6) Type some text into the text area.
7) Copy some text.
8) Attempt to paste the text into the text area.
RESULT:
SIGSEGV 11* segmentation violation (etc...). See gifs enclosed for the full error message.