Here are some shortcut keys that might help. While viewing the log window:
Ctrl+Home - takes you to the top of the log content
Ctrl+End - takes you to the bottom of the log content
Ctrl+E - takes you to next ERROR or WARNING line
Shift+Ctrl+E - takes you to the previous ERROR or WARNING line
Those last two will "wrap around" to navigate to the next/previous "event" line if you're near one end or the other..
Chris