Problem installing linux_base-8

[Johan Pettersson]

Im trying to install linux_base-8 but it fails with this:

===>   linux_base-8-8.0_4 depends on executable: rpm - found
kern.fallback_elf_brand: 3 -> 3
glibc-common-2.3.2-4.80.8.i386.rpm
cannot get exclusive lock on database
error: cannot open /usr/ports/emulators/linux_base-8/work/linux_base-8-8.0/var/lib/rpm/packages.rpm
*** Error code 1

Stop in /usr/ports/emulators/linux_base-8.
beard /usr/ports/emulators/linux_base-8# 

Any solution?