I'm sure you've been spammed a million times for this, but please update DU to fix the timer issue. A fix is out there, but because it's not official, people have different versions and it's screwing things up.

http://wowinterface.com/downloads/info12850-DalaranUniversity-DSTfix.html

This is DU 1.2 and it's supposed to solve the timer problem, but we won't know until everyone has updated from 1.1.

While it is a very good Addon at what it does, it does have 1 major flaw, it runs off the system timer not the server timer, so once you cross a time zone it warps the timer, for example I read a book and get a 3 hour timer that timer is then sent round everyone with the addon,now my timezone is servertime -1 but someone n the timzone server time +0 doesnt get the timer to start untill an hour later and hence starts to count down 3 hours from then.