''<p>allan_raewyn [[#question-1436748|said]]</p>'' <blockquote>There was a change of format a few weeks ago & the programme has not worked well since. It is painfully slow to load, & i have to log into my address book before I can open my messages.</blockquote> Do you mean click on an address book? What does that do for you? ''<p>allan_raewyn [[#question-1436748|said]]</p>'' <blockquote>Just to make things worse, for the last 2 days Thunderbird has been randomly & frequently freezing. What's going on? </blockquote> freezing when doing what? What antivirus software do you use?