When my rent check was returned as undeliverable, I called my landlord even though I was anxious about it. He mentioned wanting to put the place up for sale in August and having a sign up by the end of the week. He didn't, and I haven't heard one word about it since.
I didn't want to ruin an otherwise OK day by being told that as soon as the weather warms up he's going to put it on the market. But I didn't have a choice, I needed to know what to do with the rent check. His voicemail picked up, so he got my message and I didn't have to ruin my otherwise OK day.