What part of your job wastes the most time every week?

I'm curious about the hidden time-wasters in different industries. Not necessarily the hardest task, but the thing that repeatedly eats up hours every week. It could be: Chasing information? Waiting for approvals? Fixing mistakes? Managing files? Communicating with clients? Repetitive documentation? Software limitations? What's the biggest time drain in your work? How much time does it actually consume, and why hasn't anyone solved it properly yet? Looking for real experiences and examples. submitted by /u/