IMHO OpenBSD is pretty usable in a laptop, old or modern. Most of things run in the right way. From my point of view only a few things are missing now:
[...]
- no NTFS support
http://www.openbsd.org/cgi-bin/man.cgi?query=mount_ntfs&apropos=0&sektion=0&manpath=OpenBSD+Current&arch=i386&format=html
