Sharity crashes on Solaris for Intel (CIFS32_INVALID_HANDLE)

Since last month we had a few chrashes.
It starts with a CIFS32_INVALID_HANDLE error and after a hour it dumps a lot of messages.
A week before we updated the machine to Solaris update 11 withe the latest patches.

Anyone with the same problems?

May 7 14:47:34 zwart sharity[403]: [ID 702911 daemon.error] cifsserver/err: received rq from server with error: CIFS32_INVALID_HANDLE

May 7 15:52:08 zwart sharity[403]: [ID 702911 daemon.error] main/err: *** main: fatal signal 11, dumped checkpoints
May 7 15:52:08 zwart sharity[403]: [ID 702911 daemon.error] odlogging/info: Starting checkpoint log at Tue May 7 15:52:08 2013
May 7 15:52:08 zwart for Sharity version 3.9 [789]
May 7 15:52:08 zwart sharity[403]: [ID 702911 daemon.error] odlogging/info: 2135127.246 008 [cifsSrvRpcExecute] 135979712/0x81ae2c0 -21644592/0xfeb5bad0
May 7 15:52:08 zwart sharity[403]: [ID 702911 daemon.error] odlogging/info: 2135127.247 023 [cifsSrvRpcExecute succeeded] -21239088/0xfebbead0 0/0x0
May 7 15:52:08 zwart sharity[403]: [ID 702911 daemon.error] odlogging/info: 2135127.247 023 [NFS reply] 7/0x7 182553781/0xae18cb5
May 7 15:52:08 zwart sharity[403]: [ID 702911 daemon.error] odlogging/info: 2135127.247 020 [NFS call] 7/0x7 400657589/0x17e18cb5
May 7 15:52:08 zwart sharity[403]: [ID 702911 daemon.error] odlogging/info: 2135127.247 020 [cifsSrvRpcExecute] 135979712/0x81ae2c0 -22725936/0xfea53ad0
May 7 15:52:08 zwart sharity[403]: [ID 702911 daemon.error] odlogging/info: 2135127.247 010 [cifsSrvRpcExecute succeeded] -23475184/0xfe99cc10 0/0x0
....
....
May 7 15:52:08 zwart sharity[403]: [ID 702911 daemon.error] odlogging/info: 2135127.938 024 [fatal signal] 11/0xb 0/0x0
May 7 15:52:18 zwart nfs: [ID 333984 kern.notice] NFS server localhost not responding still trying