I am using Win XP SP3 and FF 14.0.1 I recently (last couple of weeks) noticed that, when FF 14.0.1 is running, the font size, color, bold and bullet will change automatically in Lotus Notes. Sometimes the font changes from normal horizontal to all vertical. And these changes can reverse while I watch or continue trying to type. Also, in Excel 2007, the Find & Replace box will automatically pop up and keep popping up after I close it. My IT support suspected Malware on my laptop and loaded & ran Malwarebytes on my laptop and it found two items which I removed. But the problem was still there. Next we reinstalled Office 2007 and Lotus Notes 8.5.1 --- still did not solve the problem. I began my FF troubleshooting by disabling add-ons one-by-one in the reverse order of addition (newest added was disabled first) until I got to the point before which I previously did not have this problem. But this did not find an offending add-on. (I still have these add-ons disabled.) Next, I went brute force and restarted FF with '''ALL''' add-ons disabled (using the Help option to do so). This did '''NOT''' fix the problem. Then I happened to find out that the problem went away -- completely -- if FF was NOT running. I have checked / verified this several times --- somehow FF 14.0.1 certainly appears to be the cause. As I recall I only experienced these issues AFTER I updated to FF 14.0.1 I hope a solution can be found -- otherwise I will no longer be able to use FF at work.