Please can you provide some more information:

- Are the 1800 tabs actually open (i.e. have the tabs been selected and the pages loaded) or are the tabs just pending (i.e. tabs have not been selected and the pages have not been loaded) ?

- Are a lot of the pages in the tabs from the same website ?

- What are your settings for: Zoom Mode, Zoom Type, Default Full Zoom Level, Default Text Zoom Level and Default Minimum Size ?

- Is the "When Firefox starts" option set to "Show your windows and tabs from last time" ?

Please email your answers to: dw-dev@gmx.com