[CentOS] upgrade issue

I have an old dell 2450 that was running kernel 2.6.18-308.1.1.el5 I then upgraded it via yum to 2.6.18-308.1.1.el5. Now when the server boots to the new kernel, 2.6.18-308.1.1.el5 it hangs on "starting iSCSI" and the weird thing is when I tried to switch back to the older 2.6.18-308.1.1.el5 kernel it works fine but the network script fails to start. I'm not really sure what I should do, if someone can give me an idea on what I need to do to fix the iSCSId issue on the new kernel or revert back to the old kernel and fix the network issue. The odd thing is both kernel load the e100 network driver but on the older kernel I can get the network script to start.

I would appreciate some help.

paul