MSCRM reports not working

A couple of problems I've come across at work with implementing MSCRM. These could be bugs, or may not be, who knows (I don't have the time for a detailed analysis...)

I have a MSCRM 4.0 multi tenant implementation - I 'disabled' the first (and default) tenant and suddenly all reports (for all tenants started working intermittently - often just hanging time after time). The workaround I found was to re-enable the first tenant.

This same action (disabling the first tenant) also seemed to screw around with the default tenant (the tenant it chooses when you just browse to http://crmserver/)  - just choosing one at random - this is not something I have resolved yet.

Hope this helps someone..