[TIPS ONLY. Bugs and suggestions are best addressed in the Feedback forum for the whole site.]
First, if you feel like the text is too faint, even if the size is OK with you, try changing the default text size in your user prefs...
My Settings / Preferences / Display...
You'll see Text Size (currently third settings cluster down). The default is Medium. Try Large.
If you don't like the blue sidebars (and many don't), consider using ctrl-scroll wheel to zoom the page until the main page bleeds the edges. (In Firefox, you may want to turn off Zoom Text Only). I thought it was a bit silly when I first saw it suggested -- and it really makes things big on my wide screen, but it actually is much nicer than the sidebars, which are fatiguing -- as I recognize in their absence.
Horizontal Scrolling -- a feature not a bug. =/ A fix-it ticket has been issued and the guilty are burning midnight oil. In the meantime, consider going to HTML view. As long as you use straight text, it's somewhat readable -- and it wraps properly. Also the Quick Reply (which only uses plain text) works.
Posting a Reply leaves you in the thread location where you clicked the Reply button -- not at the end of the thread where you expect it. It has been reported although there seems to be some discussion as to what the actual behavior is. I assume it will be sorted when folks have a better chance to test.
Also -- since there appears to be no way to get an email notification of a personal message -- anyone who needs to get hold of me in a timely fashion (in my moderator function) might want to consider using the contact form on my business site: http://www.tkmajor.com/cm/contact/