pass word kick out problem

Have been having trouble of late with the system kicking me out claiming I have used up my 3 incorrect password trys…

yet in every instance I have properly entered the password…

this has occured on 3 occations this past week…

thanks for any help on this…

Please also include the browser and operating system you’re using.

Not having a problem with it today…

but…

Linux Mint 17.0…
FireFox 33.0 (the special mint version) (not sure if that makes any difference)