If you are experiencing performance issues with CRM2011 online then try the following 3 items, we noticed a substancial increase in performance at our customer sites.
Make *.crm5.dynamics.com a Trusted site.
Add *.crm5.dynamics.com to the list of sites ignored by their Antivirus applications and Popup blockers.
A new sitemap editor has been released for Microsoft CRM 2011 by Microsoft. It can be downloaded from http://dynamics.pinpoint.microsoft.com/en-us/applications/microsoft-dynamics-crm-sitemap-editor-12884928049.
To add a new element, open the appropriate node and select the plus button.
Unfortunately there are no smarts so you do need to know the entity or url to insert new items. Plus would have liked to of seen it as a separate application rather than embedding it into the CRM instance.