Imp has bombed

[Matt Sales]

Hello,
I've been running Imp version 2.0.11 with minimal babysitting for over a
year.  Last week, however, it started crashing and I have not been able to
fix it.  When someone tries to log in, these error messages are displayed:
-----------------------------------
Warning: mysql_db_query is deprecated; use mysql_select_db() and
mysql_query() instead in /home/httpd/html/mail/imp/lib/db.lib on line 186

Warning: Cannot add header information - headers already sent by (output
started at /home/httpd/html/mail/imp/lib/db.lib:186) in
/home/httpd/html/mail/lib/horde.lib on line 1021

Warning: Cannot add header information - headers already sent by (output
started at /home/httpd/html/mail/imp/lib/db.lib:186) in
/home/httpd/html/mail/lib/horde.lib on line 1022

Warning: Cannot add header information - headers already sent by (output
started at /home/httpd/html/mail/imp/lib/db.lib:186) in
/home/httpd/html/mail/lib/horde.lib on line 1023

Warning: Cannot add header information - headers already sent by (output
started at /home/httpd/html/mail/imp/lib/db.lib:186) in
/home/httpd/html/mail/lib/horde.lib on line 1024

Warning: Cannot add header information - headers already sent by (output
started at /home/httpd/html/mail/imp/lib/db.lib:186) in
/home/httpd/html/mail/imp/lib/imp.lib on line 676
---------------------------------

I have the file structure for imp & horde backed up and I re-deployed them,
but I get the same message...  Does anyone recognize these errors?

Thanks in advance,
Matt