<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Arial; font-size: 12pt; color: #000000'>Hi,<br><br>Has anyone else in the building noticed a periodic rumbling of pipes? I'm not sure if it's coming from the heating system or the plumbing, but it sounds like there's a build up of something that's not getting through to its endpoint. It seems to come and go, but it's been happening over the last several days and I think unless I'm hearing things, this needs some investigation. By the way, I noticed it when I was in the laundry room yesterday, so I don't think it's particular to my unit.<br><br>Please say something if you've heard anything along these lines. Thanks.<br><br>Chris<br></div></body></html>