Why is every second question being deleted?

There seems to be a problem there in the US.

I had the same problem here in Australia earlier but it seems to work ok now

There are times when one of the many Yahoo servers is overloaded with activity and the 'Page not found' or 'This question has been deleted' message appears.

Another possibility is that your computer has too many 'junk files still stored in the cache - they do need to be cleared occasionally to help the browser work more smoothly.

Download CCleaner. It used to be called 'Crap Cleaner', because it cleans out so many 'junk' files: history, cookies, temporary files, Temporary Internet Files, Recycle Bin and many more. Only 3 MB and free! Options can be placed in the Recycle Bin too - use the 'Open' one.

It works for Internet Explorer, Firefox, Chrome, Safari and Opera, as well as a number of other programs that set cookies and files. The extra files can be removed for each of your browsers at one time in one click after you set up the options you wish. (It works after you close the browser.) The bonus is that using it regularly speeds up your computer too! It also has a reliable, well-recommended cautious registry cleaner if you need to use one.

There is now an additional program which adds to its cleaning capabilities so that more 'junk' files will be erased.

http://www.piriform.com/ccleaner/download/standard

http://download.cnet.com/CCEnhancer/3000-18512_4-7...

Also, for individual browsers, see:

http://www.wikihow.com/Clear-Your-Browser's-Cache

http://www.wikihow.com/Clear-Your-Browser's-Cookie...

http://www.wikihow.com/Clear-Your-Online-Activity

Perhaps they violate the guidelines like your question does...