[50 character or so descriptive subject here (for reference)]

[Tan Bin]

Configuration Information [Automatically generated, do not change]:
Machine: sparc
OS: solaris2.6
Compiler: gcc
Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='sparc' 
-DCONF_OSTYPE='solaris2.6' -DCONF_MACHTYPE='sparc-sun-solaris2.6' 
-DCONF_VENDOR='sun' -DSHELL -DHAVE_CONFIG_H  -D_LARGEFILE_SOURCE 
-D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE -I.  -I. -I./lib 
-I/opt/local/include -g -O2
uname output: SunOS stt-bohrium3 5.6 Generic_105181-23 sun4u sparc SUNW,Ultra-80
Machine Type: sparc-sun-solaris2.6

Bash Version: 2.03
Patch Level: 0
Release Status: release

Description:
starting from yesterday, on one, two and three hosts i start to receive:

$ while [ "$is_opt" ]; do echo 781; done
bash: syntax error near unexpected token `done'

Repeat-By:
yesterday i made some changes to my .bashrc script.