Somehow I had messed up preferred application to open a file.I fixed by selecting a file of appropriate type, selecting Properties, and setting preferred application.
That solved almost all my problems. The only exception is when using Synaptic. When I click on "Visit Homepage" it insists on using Firefox :< It used to open properly with my preferred browser SeaMonkey. All other HTML open correctly with SeaMonkey. Is another place I need to set preferences? TIA
