execi doesn't work properly in conky 1.8.1-6

Conky 1.8.1-6 introduces a very serious bug in interval execution commands which leads to buggy output or even crashes

See details at

http://sourceforge.net/tracker/?func=detail&aid=3432429&group_id=143975&atid=757308
https://bbs.archlinux.org/viewtopic.php?pid=1011498#p1011498

Need to downgrade to 1.8.1-2 or upgrade to 1.9

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: conky (not installed)
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
Uname: Linux 3.2.0-24-generic x86_64
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
Date: Tue May 8 10:34:16 2012
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
ProcEnviron:
 LC_TIME=en_GB.UTF-8
 LANGUAGE=en_US:en
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: conky
UpgradeStatus: Upgraded to precise on 2012-05-04 (3 days ago)