Exponential growth of the slots table

[Elwood Hunt]

 Hi,

I am using version 2.3.16 with MySQL as the database.  For backups, I will
often use MySQL Administrator to export the entire schema to an SQL DDL
file.  I recently noticed that the size of my backup file grew from ~ 800K
to  ~ 2.8MB after adding a budget for one month (I have maybe 25 expense
accounts).  I also noticed that it was the slots table that grew so much
(several thousand additional rows).  Is this normal or did something go
wrong?

Thanks