Trying to get the log files now.

In the meantime, I noticed that the application is ending after every 6 hours.

2012-05-29 10:20:41.563    Application Ended
2012-05-29 16:20:45.173    Application Ended
2012-05-29 22:20:44.827    Application Ended
2012-05-30 04:20:45.217    Application Ended
2012-05-30 10:20:45.490    Application Ended
2012-05-30 16:20:46.743    Application Ended
2012-05-30 22:20:45.717    Application Ended
2012-05-31 04:20:47.303    Application Ended
2012-05-31 10:20:48.570    Application Ended
2012-05-31 16:20:48.743    Application Ended
2012-05-31 22:24:24.257    Application Ended
2012-06-01 04:24:24.860    Application Ended
2012-06-01 10:24:25.160    Application Ended

Host says application pool recycles every 120 minutes.