I guess you could go all out and put a fine metal mesh in the vacuum tube and ground it to be really careful or even spend a wodge of cash on an ionizer If you've got a cleaner that creates great big arcs of static (presumably made by Van der Graaf) then yes, don't use it. If, however, you've decided not to place the vacuum unit ontop of the pc and left it said pc plugged in i can't see static being an issue..