You're on 3+ clients and billing a total of 11 hours each day. Hours distributed randomnly between the clients as you frantically field forest fires from each.
Of course, one of the clients you're on doesn't have an expense code set up for it yet.
Inevitably, weeks later when the code gets set up you've totally forgotten just how many hours you worked on the project two weeks ago. You're left poring through emails to see when you may have worked on this and for how long. Finally, you make some wild guestimation with a serious bias for less hours to please your manager and look efficient.
But seriously, does anyone else run into this sort of thing?