As most of you know, JES Web Server uses NSS for its SSL implementation. Recently,  FIPS-140 certification was issued to NSS (again):

August 27, 2007: Our Level 2 cert has been issued! NSS Level 2 Cert
August 8, 2007: Our Level 1 cert has been issued! NSS Level 1 Cert

Read more about it on the NSS FIPS page.