MVC :: Memory Leak In Database Factory

I'm writing an MVC app and want to have a central DataBase factory class to provide all my DB connections, something like this:-

[Code]....obviously I'll have to instanciate this every time I need to use it, so I was thinking of making it a static class:-

[Code].... so that instead of my controller code saying

[Code].... I can just say

but would this cause a memory leak? I'm sure I remember reading somewhere that if a static class creates objects that persist beyond it's methods and return those (esp things like DB connection objects) these won't get garbaged collected when the calling method is disposed of as they were created/referenced outside the scope of that calling (controller action) method and so will hang around in memory?

var tableObject = DatabaseFactory.GetDatabaseTable();
List<DbRecord> records = tableObject.Table.ToList();