I have a Libre Office Version: 4.2.7.2 Build ID: 420m0(Build:2) document (second try) that has had abrupt unforseen changes made to it through processes other than my input which have rendered it crippled. The first try at doing this document as I was about to finish it seemed like it exploded. There was all sorts of hard disk noise as parts of it were removed and table settings changed. The header was completely removed even though the menu settings showed it was suppose to be there. I decided rather than patch that and go on I'd start over and build it somewhat differently. It seems the longer I work on L.O. documents and the more changes I make they end up exploding and become of less use. Document description now: 3 columns separated by .10 space, legal paper, landscape, with a 365 row 4 column table inside the page columns. 13 pages long containing dates/days in 1st column, time in 2nd column, medications list in 3rd, and blood pressure and symptoms in 4th. The 4th cell of each table row has a table inside of it that has 6 columns and 5 rows. The document before was the same except for I tried putting 5 single row tables in each 4th cell. I neede to have the individual columns of each row adjust for text space.
Mid way throught revamping 2nd try I stopped inputting text into table with the cell half way through and chose to protect the whole document by hilighting it and choosing cell protect from a rt click over the hilighted doc. menu while I went to eat. When I came back and tried to unprotect two of the cells with tables and continue inputting text in them I got this message and cannot use/change those tables or cells. {"read only content cannot be changed – no modifications will be accepted"}. Bad luck for sure. Is it correctable? What could have caused it? Stuff like this happens fairly frequently. Any idears?
Sure wish Open office was available in Mint repos. Might try another distro in VBox. Thanx if you can help! %)SW
Here is another thing I noticed that the document is doing. If I zoom it out the distance between the columns gets wider and if I zoom in they get closer together and begin to overlap.

Whatever the software crash, disk noises are alarming. Your build?
DID YOU CHECK THE DISKS?

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2-3 years ago I built two AMD Llano/Fusion A4 processor computers [3300 on Biostar & 3400 on Gygabyte] 8gb ddr3 1600mhz ea. and 1TB Seagate each. Neither build has been as likable as previous 32 bit builds I've done. Not sure why. I'm sure 64 bit is part of it. Nothing is real concrete other than unexplainrd software crapola happening. I've got dementia and getting worse but I keep plugging any way. I don't have enough mental stamina to giterdone fast or on my own. I'm kind of like 50 first dates girl who was semi-functional but had no memory of her past except I have problems with the now as well. Maybe something like Antegrade amnesia.
Could a failing flaky mouse be causing this as I kind of see where it is causing some of my problems. Junk Logitech!!! One of the drives I did a wipe years ago on writing letter symbol patterns. not sure how to check disks? I know I've done it b4 but details are gone from memory. I need lots of my memory cueing/cuing? and time to get any thing done. Does checking disk destroy the data? I'm really drawing a blank here. I installed smartmontools from repo. now have to learn how to run it. Must be command line I didn't see it show up in menus. Other hand I think this might be memory as it just happened to me when I had libre office open and was searching the net, and also had Virtual box open running Mint 17 there on 3gb ram and watching old tv shows on Youtube. This really has me baffled everything seemed to lock up and not respond so I ctrl alt esc 2x and pressed esc several times and virtual box unlocked and was able to close all of that. Then I close down unnecessay items in main install and it seems to be better but a had a short lock up even after doung all of this. Keyboard is old and have suspecter it for years. So guess I'll start there and with mouse. And do step by step stomp.
Wonder if I can use one wireless KB/Mouse to control both computers at different times plugging the keyboard into an usb octapus outlet and the plugging computers into the octapus outlet too? Well My mind is shutting down neighbor smells are putting me to sleep so check ya back later!! Thnx

Unusual post . . .

To check the disks, they need to be unmounted. If you have 2 systems installed, you can check one from the other. Otherwise booting from a rescue disk or install cd is probably best. You can usually get root console on an install cd. Something like

will do it where sdxx = sda1 or whatever partition you want to check. Do nothing else while this is going on.

EDIT: The Antegrade Amnesia is often caused by drugs. It strikes me your box or install may be dying as lockups are not common on decent software. So a memory test (often a boot option these days or a reinstall may be needed to cure things.

The early AMD chipsets are tolerated rather than run well on linux.

--------------------------------------------------------I quote so I can refresh what to reply to.
Will try tests later when head is more clear and rested. The only drugs I use are blood pressure and use to nsaids. Don't even do coffee any more but may have a beer daily or less. I have had 3 major head injuries--TBI[105mph sideways into rt rear corner of Ford LTD station wagon and pushed it 80ft w\ brakes on and in park(got pics if you care to see passenger door at steering wheel)],that one with Craniectomy; at least 6+ strokes=white spots in brain; and one Angioplasty,[also rt temp/parietal cortex is white signal MRI aka scar tissue {retard brain-functions but way slower and unpredictable.}]. Have other symptoms with no desires and feelings except maybe anger at times[I keep it pretty level midrange except when in hurry]. Was a blank slate getting out of hospital but things came back really easy and fast to a point. Released in 21 days and back in Chiropractic College and working 90 hours a week in 4 more weeks.Tried SSDIs and make me worse as do other anti-depressants-mood stuff. BP is 185/111/69 on average on meds. MDs R clueless. Also allergic to people personal care chemical fragrance,laundry,deodorant,etc.smells. My belief where it comes from mostly Craniectomy era and chemical exposures of petroleum and xray chemicals in practice and maybe medical research exhaust. Lived near a lab f0r 4 yrs. So next pc may be Intel. Don't like supporting Monopolies that's mostly why Linux instead of Proprietary. I started and used the Biostar to do the same document and no hichoughs whatsoever. Both installs are 1 month old. Mint 17.1. A while back I checked bios on one of them and the memory speed had been kicked back to 800mhz. Probly the Gigabyte[dern memory]. Bumped up to 1333 or 1600 and still there. The other is at 1333 just checked it but can't remember which it was. Life is exciting and fun with no memory. Thankgood for pcs and paper and pen I'd be lost in a lost world without. Dementia=Can't remember if I'm depressed. I tell people I'm 6 years old pretending to be at least 16yo but actually 60 this year. The only pc hiccoughs I have are with Libre Office!!!and some of that might be ghost mouse clicks and ghost duplicate keyboard clicks that I do not realize ore happening...or mouse keyboard worn out well thanx again and L8R%))SW seems to help to bounce it off someone. Wish Libre was more to my functional liking!!!

I switched usb ports for mouse and seemed to clear the mouse mis-behavior.
Will get an USD keyboard to replace the PS2 KB and see if it does the same!
Might be solved soon.