Hello,

there are some dependencies missing in 4.5 from the firefox update 
yesterday:

  --------------------
  YUM - errata
  --------------------
Error: Missing Dependency: evolution28-pango is needed by package firefox
Error: Missing Dependency: evolution28-gtk2 is needed by package firefox
Error: Missing Dependency: nspr >= 4.7.0.99.2 is needed by package firefox
Error: Missing Dependency: libnssutil3.so is needed by package firefox
Error: Missing Dependency: nss >= 3.11.99.5 is needed by package firefox
Error: Missing Dependency: evolution28-cairo is needed by package firefox


Sincerly,
Klaus