Symptoms
When certain users log in to the instance the homepage being used does not load properly and instead keeps on reloading.
Release
All releases
Cause
The affected user(s) is using a homepage that is set for another user erroneously.
Resolution
1) Identify the current homepage that the affected user is using by navigating:
User Administration > User Preferences > Find the record where Name = homepage, User = the affected user
2) Under the Value field either blank out this value or replace it with another sys_id value from the sys_portal table (the table that stores homepages) that the user has access to.