They deleted the wrong Threads along with a long answer...
Typically no, but there can be issues with bad sub-components (SATA, USB, NIC, etc). IF your MOBO suddenly slowed down then my first (2) guesses are:
1. Corrupted BIOS ; Clear CMOS (universal How To) - http://www.youtube.com/watch?v=rdHH9KrceR0
2. Missing/Bad stick of RAM. Compare CPU-z 'Memory' tab with Windows Resource Monitor and in particular the Hardware Reserved value. If Hardware Reserved _____MB > 1 Stick of RAM (1024MB = 1GB) then often the BIOS has Disabled at least (1) stick that was deemed bad to avoid errors/corruption.
CPU-z - http://www.cpuid.com/softwares/cpu-z.html
Resource Monitor in Windows 7 (32GB -24MB ; 20MB-768MB is normal ; >80MB is only if MOBO has onboard video)