Freezing upon database switch

[Spliff]

Can't edit the above. UR's described behavior remains aleatoric, even after leaving UR with Alt-F, then only closing down the pc, most of the time, just the alphabetically first, the "A", database is re-opened on next UR start. Haven't found out about possible specific circumstances which might cause this but I'm positive now it's not my closing Windows without first closing UR. Is not really important though.