Originally posted by Epoch
How many miles?
Hrm... happened to me right before my clutch went out 
Anyways, what I used to do when it would have a hard time either shifting into fifth or when it would grind really badly, I would depress the clutch all the way down, and let the RPMs settle to less than 2K... it would shift smoothly at that RPM. Then I would give it gas, rev match to what it should be for freeway speeds at that gear, and let out the clutch. Worked for me for about 3 weeks, then the clutch died.
It might be good to have it checked out.
Its only at 53,000 miles I wouldnt know why the clutch would already wore out. Its not my my first 5 speed. But thanks anyway