View data - aborting randomly and no result

Hi

1. When I view the data of a table, there is no result.
    (blank window and status is "aborting")

2. When I execute the query, the result is blank.
     The status is ":".

Both the behaviours are not consistent.

I am using pgadmin3-1.6.2/wxWidgets2.8.0
The platform is Solaris10/x86.

Any idea??

Thanks
Dhanaraj