3.0.5 Hang Server Out of Memory

After upgrading to 3.0.5 I had my dedicated server go down several times. I wonder if anyone else has had this issue. My servers run the old 2. versions without issue.

After upgrade have had some memory issues and had to revert back to old install.

Any suggestions. Thanks in advance

Would definitely have your hosting company look at any core dump that exists to identify what was using the memory at the time it crashed.