This is not an "individual" malfunction...
This is actually a physical manifestation of the unit's lack of self-worth...It "wants" to "be a part of" the rest of the worthless junk currently burning in trash heaps the world over. That "burning rubber smell" could also be your neighbors leaving town due to the decibel level coming from YOUR vacuum!
He who has decided to "splurge" on a new vacuum cleaner, March 2009