datapump export problem

Hi,
Oracle Verision : 10.2.0.1(64-bit)
Linux Version : RHEL-5(64-bit)

Here when i am trying to export a schema it is taking lot of time  and previously i was able to import lot of schemas in to the same server .

[oracle@qtl2235db dbdump]$ expdp GFSPROD1_AUG0511/GFSPROD1_AUG0511 directory=dbdump dumpfile=GFSPROD1_AUG0511_SEP0811.dmp logfile=GFSPROD1_AUG0511_sep0811.log exclude=statistics,grants
 
Export: Release 10.2.0.1.0 - 64bit Production on Thursday, 08 September, 2011 5:28:32
 
Copyright (c) 2003, 2005, Oracle.  All rights reserved.
 
Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options
Starting <font color="red">"GFSPROD1_AUG0511"</font>.<font color="red">"SYS_EXPORT_SCHEMA_04"</font>:  GFSPROD1_AUG0511<font color="darkgreen">/******** directory=dbdump dumpfile=GFSPROD1_AUG0511_SEP0811.dmp logfile=GFSPROD1_AUG0511_sep0811.log exclude=statistics,grants
Estimate in progress using BLOCKS method...
Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA
</font>