I recently started using the new Force.com IDE plugin (in Eclipse Kepler). Since that happened, today I looked in the Setup Audit Trail log and was shocked to see that against my name there have been over 50,000 code changes in the last few days!
It appears that whenever I edit & save a single file from the IDE, somehow 100% of the code gets a "Changed XXX Apex Class code" event logged against it, even though a diff shows that nothing actually changed in the files I didn't edit. This seems impossible, since the saves only take 1-2 seconds max.
Has anybody seen this, and can anybody shed light on how to prevent it? Or if it is caused by the Force.com IDE, or possibly a Tooling API or platform bug? It's a huge annoyance and quite disturbing to my client's admin team :)