I have used Sys::Syslog on Solaris and never had any problem with it. Post a test case demonstrating the behaviour and I will try it over here for you. It's always a good idea to post a test case any-way- sometimes the very act of creating a test case will show you where the bug is and if not it makes it easy for us to run your code and confirm or deny what you are seeing, without a test case it is just guess work.