Typical problems with resource assignment and manpower in project management include:

1. **Over-Allocation**: Team members are assigned too many tasks or responsibilities, leading to burnout and decreased productivity.
2. **Under-Allocation**: Not all available resources are effectively utilized, resulting in inefficiencies and wasted capacity.
3. **Skill Mismatch**: Assigning tasks to team members who lack the necessary skills, leading to delays and quality issues.