Bad news for Bucktown coffee drinkers: Local favorite Ipsento (2035 N. Western) closed suddenly yesterday after an Illinois Department of Revenue official showed up to revoke its business license because of unpaid taxes. Store owners said today they're "working hard" to right the ship and reopen soon.

Here's the explanation they posted on their Facebook page:

Ipsento is temporarily closed. In 2010, we mistakenly overlooked the filing and paying of nine months of sales tax. We have been current with this years sales tax. However, to date, we have been unable to pay the lump some [sic] we fell behind. For this reason, the state revoked our business license yesterday. We are working hard to get the license back...and have been told by our tax expert lawyers that this shouldn't be a problem. We originally thought we could turn this around right away. But that's not how the Department of Revenue works. Our hope is to re-open next Monday afternoon. We'll keep you informed as we find out more. We REALLY appreciate how supportive you all have been!