Problem description: 

Steps to reproduce:
1. This is not a technical problem. This is a major usability issue. A lot of key shortcuts (hot keys combinations) are blocked from usage. Note: shortcuts here are concedered to be the same functionality as in Windows Alt + corresonding letter for a section/subsection of a menu from a menu bar, or a tool from a tool bar. For example, in Microsoft Office Word Alt+H+PG - voila, Paragrpahs editing. Takes a short hovering over the keyboard, much faster, than using a mouse. The same for alignments, font editing, windows/open files switching, etc. - almost all functionality. And that is why of the reasons why people like it, professionals and office workers especially.
 
2. Problem: the only way to access a menu bar in LibreOffice Writer in Ubuntu without using a mouse is Alt+f10. After that you need, for example, to reach a Window subsection of the menu, press right arrow key SEVEN times. This is simply, I beg my pardon for the word used, ridiculous. Shortcuts mean to be a tool accelerating productivity. Pressing Alt+F10, then SEVEN times arrow to access a windows switching menu - is not facilitiating at all. 

3. I would be very glad to discover if I was wrong in my comment. Otherwise, I would strongly suggest that implementing such functionality is just essential and crucial for a product to competitive. Shortcuts are no more a feature just for 'geeks', that is something commonplace, and widely used. For instance, I've got it on my trainings for SAP, for some other ERP systems, for Microsoft Outlook and these all just on my workplace induction carried out by IT dep on a regular basis....

Yours sincerely,
Alexey Solonenko
ot2@bk.ru, tab4@live.com              
Operating System: Ubuntu
Version: 3.6.2.2 release