Stuff the Maverick upgrade broke

My 1.5 year old MacbookPro was starting to behave badly including failure to complete booting and other niceties. The computer support guy suggested to upgrade from Mountain Lion to Maverick to see whether it would fix things.
Initially that seemed to work; however, many programs refuse to run under Maverick. This includes: Gnumeric and (importantly) nfs. It appears that mounting nfs via the finder is not anymore possible. However, I still am able to do it via the command line (using the resvport option, which should not be necessary, but which nevertheless does the trick):sudo mount -o resvport -t nfs mcblserver:/var/www /Users/mjeltsch/nfs And talking about Gnumeric: I guess I need to compile it newly for Maverick myself...