Ixabepilone in Treating Patients With Metastatic or Recurrent Squamous Cell Cancer of the Head and Neck

metastatic squamous neck cancer with occult primary squamous cell carcinoma, recurrent metastatic squamous neck cancer with occult primary, recurrent salivary gland cancer, recurrent squamous cell carcinoma of the hypopharynx, recurrent squamous cell carcinoma of the larynx, recurrent squamous cell carcinoma of the lip and oral cavity, recurrent squamous cell carcinoma of the oropharynx, recurrent squamous cell carcinoma of the paranasal sinus and nasal cavity, recurrent verrucous carcinoma of the larynx, recurrent verrucous carcinoma of the oral cavity, salivary gland squamous cell carcinoma, stage iv squamous cell carcinoma of the hypopharynx