[yjftsjthsd-h]

... unless you are writing a half-gig every hour, why would that be remotely expected?

[saagarjha]

I would think that it's touching a bunch of log files slightly or something…

[aasasd]

My guess so far is something like Firefox's history database.

[Yetanfou]

If that is half a GB Firefox would be crawling. Here is is around 60MB on a well-used machine with an ancient FF profile.