There have been recurring reports of gnuserv causing 100% cpu utilisation under cygwin. I had always assumed that this was a cygwin bug, and indeed upgrading the cygwin version seems to cure things. However, we have now had reports of the same situation occuring on AIX and solaris, and I too have seen this behaviour now although it generally works for me. Does anyone have any idea what could be going on? This is both 21.1 and 21.2. In my case the gutter got redrawn repeatedly for ever, maybe this is a different problem to do with the gutter? Trying it again and the whole thing worked. I wonder whether there's something suspicious about the process or signal handling code? andy -------------------------------------------------------------- Dr Andy Piper Senior Consultant Architect, BEA Systems Ltd