I am using Mint 6 and have just set up Thunderbird by copying over my profile from the previous pc. All appears to work well except for one feature: The font size of the framework and mail folders is too large and thick. The email content is OK. I have the same settings which were very satisfactory previously. Strangely, my Firefox is perfect and in Edit>Preferences it has identical settings of font type and size to Thunderbird's but reducing the two settings in Thunderbird's Preferences has no apparent effect.
Anyone have an answer to this, please?
After much investigating I found the setting in Edit>Preferences>Advanced>Config Editor>layout.css.dpi to be set to 72 whereas in Firefox it was -1. Setting it to -1 produced the same neat font size I wanted.