Problem with kernel package.

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http://forums.fedoraforum.org – I am running Fedora 15 on a second machine. I had trouble booting Linux and I found that while grub started off trying to boot vmlinuz-2.6.43, I had to backtrack to vmlinuz-2.6.42 in order to boot. rpm -qa | grep kernel shows both kernel packages installed and rpm -ql ... shows the newer kernel should be in /boot, but it isn't. Apparentely, the kernel upgrade failed to install those files in /boot but it did change grub.conf. How might that have happened? And what should I do about it? Should I try to reinstall that kernel package? Of should I just wait for a kernel upgra (HowTos)