Help Needed regarding Opkg Upgrade error!!!

Guys i am very new to all this and really would appreciate all the help i can get …i just booted angstrom demo mage on the beagel and wanted to upgrade so did opkf update and then did opkg upgrade …however the screen now stalls at starting gnome display manager (gdm)…it just stalls here and doesnt go forward at all …please i need a solution else my project is done for!!!