External USB drive partition not mounting after upgrade to 10.6.6

Hello,
I have a Mac Mini and have an external HDD (Seagate GoFlex Desk) setup with two partitions with "Mac OS Extended (Journaled)" format. After the recent OS upgrade, only one partition mounts. I have tried to verify/repair from DiskUtility and it shows all green over there. It just fails to mount. Any help would be appreciated.
Thanks

Hi,
I have the same symptoms : external HD with 2 partitions. Only one mounts.
I can mount the other one in disk utility and access files in terminal. But the partition doesn't show in Finder or any apps.
I've tried to disable journal and enable it again but nothing changes.
Only message I get in the console is when I eject the disk using disk utility :
2/20/11 7:20:15 PM kernel hfs: disabling journaling for mount @ 0xac60520
2/20/11 7:20:35 PM com.apple.notifyd[12] EV_DELETE failed for file watcher 97
2/20/11 7:20:35 PM com.apple.notifyd[12] EV_DELETE failed for file watcher 93
2/20/11 7:20:35 PM com.apple.notifyd[12] EV_DELETE failed for file watcher 92
2/20/11 7:20:35 PM com.apple.notifyd[12] EV_DELETE failed for file watcher 91
2/20/11 7:20:35 PM com.apple.notifyd[12] EV_DELETE failed for file watcher 89
2/20/11 7:20:35 PM com.apple.notifyd[12] EV_DELETE failed for file watcher 96
2/20/11 7:20:35 PM com.apple.notifyd[12] EV_DELETE failed for file watcher 90
2/20/11 7:20:35 PM com.apple.notifyd[12] EV_DELETE failed for file watcher 95
2/20/11 7:21:04 PM kernel mdworker (map: 0x8cea99c) triggered DYLD shared region unnest for map: 0x8cea99c, region 0x7fff87000000->0x7fff87200000. While not abnormal for debuggers, this increases system memory footprint until the target exits.
2/20/11 7:21:37 PM kernel hfs: Initializing the journal (joffset 0x1f82e02 sz 0x2000000)...
2/20/11 7:21:55 PM com.apple.notifyd[12] EV_DELETE failed for file watcher 115
2/20/11 7:21:55 PM com.apple.notifyd[12] EV_DELETE failed for file watcher 111
2/20/11 7:21:55 PM com.apple.notifyd[12] EV_DELETE failed for file watcher 110
2/20/11 7:21:55 PM com.apple.notifyd[12] EV_DELETE failed for file watcher 109
2/20/11 7:21:55 PM com.apple.notifyd[12] EV_DELETE failed for file watcher 107
2/20/11 7:21:55 PM com.apple.notifyd[12] EV_DELETE failed for file watcher 114
2/20/11 7:21:55 PM com.apple.notifyd[12] EV_DELETE failed for file watcher 108
2/20/11 7:21:55 PM com.apple.notifyd[12] EV_DELETE failed for file watcher 113
2/20/11 7:22:09 PM kernel mdworker (map: 0xbdb13d8) triggered DYLD shared region unnest for map: 0xbdb13d8, region 0x7fff87000000->0x7fff87200000. While not abnormal for debuggers, this increases system memory footprint until the target exits.

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