Good $(date) !

I have a server SL 6.0 (Carbon) x86 installation is up-to-date.

When I need edit any config file, i run (for example):
$ sudo vim /etc/rc.local

But, a strange things is happening after an update about 1.5 - 2 months ago:
1). I ran
                     sudo vim /etc/rc.local
2). press CTRL+Z for backgound vim(or sudo?) and i get return code = 148
3). do some other things in my terminal
4). trying to resume the vim process and get failed:
                     $ fg
<now vim has draw a his screen>
If i try to do anything, vim goes  to background again, but returncode 
is 149 for now :(

All of next attempts to foreground vim is useless and return code 149 is 
returned :| ( For example: )
                     $ fg
                     sudo vim /etc/rc.local

                     [1]+  Stopped                 sudo vim /etc/rc.local
                     ret:149^t:25@17:45^u:adska@s01^d:~^sh:-bash$


Same problem was attended on other SL 6.3 x64_86 server just right after 
installation. But after update from SL-FASTBUGS repo, problem is gone.
                     $ sudo yum --enablerepo=sl-fastbugs update

With first a x86 server that update was useless.



PS: This happens only with sudo ( if i do ``sudo su'' and work in the 
roof terminal - that stuff isn't happens )
PSS: I google a little and found here is SIGTTIN(#21) has a place
PSSS: Any suggestions ?
PSSSS: This is rly annoying stuff :((((((((((