When I flush the toilet in the master bath, the 2 sinks in the bathroom gurgle. No water comes up but the noise is getting worse. What do I do? Also, when the tub drains, the toilet drains as well. HELP!! :eek:

You have a blocked or frozen roof vent. Run a hose down the lavatory roof vent to unfreeze it. If that don't get it the vent will have to be snaked. Good luck, Tom