My Thunderbird is nearly useless with this update. It has incredibly small type. How do I change it? The Theme and Font extension is disabled by the new version. I think there needs to be a built in font extension that works on every release. I can barely read these subject lines. It's not acceptable. I just donated to Thunderbird. This is a must-have extension for me. Also several other extentions don't work. There needs to be some way of informing people if their extensions will work. I wouldn't have updated if I had known. Your program will flounder if you don't address the issue. Hence forth I'll be reluctant to update. That will potentially be a problem down the line, so I may have to consider changing my email programs. Email is nothing without readability.Also why does it take forever for a jpeg to upload here? I have very fast internet backbone. I use this at work.