How can I correct the problems I've been experiencing lately with drop-down menus in general as well as and leading of text. It 's occurring on both Safari and Firefox browsers.

Question

The above headline pretty much covers the problems.
Access to the drop down menus is erratic.  Sometimes it's problem-free, but at other times it's impossible to see the options on the menu, or if they are visible, it's impossible to effect a change by clicking on one of them.  The times I notice it most is when I am trying to change fonts or font sizes, but  it occurs at other times, as well.
It's also frustrating to have to deal with double spacing (for example, when describing items on eBay).  Sometimes the text flows  normally,  but if I force a  return, the text that follows usually is double-spaced.
Often,  the justification option does not work either.
Occasionally, I can  get around one problem or another by switching back and forth between Safari and  Firefox, but eventually, the original problem resurfaces.
Because it happens on both browsers,  eBay tech support is inclined to think the problem is in my software. (I'm inclined to agree.)
Although they have suggested clearing  the history in FF, that option must have been relocated, because  it'sno longer under the "Tools"  menu, where it was  in the past. I also can't find  the clear  your cache option on OS Safari or 10.8.3.

Answer 1

callthescribe wrote:
 ...Although they have suggested clearing  the history in FF, that option must have been relocated, because  it'sno longer under the "Tools"  menu, where it was  in the past. I also can't find  the clear  your cache option on OS Safari or 10.8.3.
I don't think it'd help much but clearing history is now in the History menu, and setting FF to clear history on exit is near the bottom of the Privacy tab of FF Preferences.
Also, if you don't have the Develop menu in Safari, open Safari preferences, click Advanced, and select “Show Develop menu in menu bar.” You'll find "Empty Caches" there.