I had an issue where MC would "pause" (like a hang) for a few seconds not long after starting. After looking though the logs it would appear I had some old entries relating to a HH sync I had setup that was no longer on that network share. The "Fix" was to do a Tools --> Options --> Handheld --> Redetect all devices.
0014867: 7780: General: CFileSystemManager::GetDriveExists: Error using connection '\\RUMPUS\Media': 67
0014867: 7780: General: CFileSystemManager::GetDriveExists: Drive does not exist (drive: \\RUMPUS\Media, filename: \\RUMPUS\Media\MP3Library\)[/b]