I am having the same issue acutally showing -1 linden and I am not happy! I am hoping that Linden fixes this when there maintence is finished! Know you are not alone.
During this unscheduled maintenance my L were taking! I am now -1 I have also been trying to access my history to find out who or what took my money. I am hoping when I log back in that it is there, but if not I am expecting it to be replaced if this was a Linden issue,