Tag process in mysql

[Chadi]

My mysql is going a little crazy due to this specific tagging process shown in mysqld processlist.

+-----+------------------+-----------+-------------------+---------+------+----------------------+------------------------------------------------------------------------------------------------------+
| Id  | User             | Host      | db                | Command | Time | State                | Info                                                                                                 |
+-----+------------------+-----------+-------------------+---------+------+----------------------+------------------------------------------------------------------------------------------------------+
| 929 | user_vbuser  | localhost | vb_dbname | Sleep   | 3    |                      |                                                                                                      |
| 930 | user_vbuser  | localhost | vb_dbname | Query   | 3    | Copying to tmp table | SELECT tagthread.tagid, tag.tagtext, COUNT(*) AS searchcount
                                        FROM tagthread AS tagthread
                                        I |
| 931 | user_vbuser  | localhost | vb_dbname | Query   | 2    | Copying to tmp table | SELECT tagthread.tagid, tag.tagtext, COUNT(*) AS searchcount
                                        FROM tagthread AS tagthread
                                        I |
| 932 | user_vbuser  | localhost | vb_dbname | Query   | 2    | Copying to tmp table | SELECT tagthread.tagid, tag.tagtext, COUNT(*) AS searchcount
                                        FROM tagthread AS tagthread
                                        I |
| 933 | user_vbuser  | localhost | vb_dbname | Query   | 2    | Copying to tmp table | SELECT tagthread.tagid, tag.tagtext, COUNT(*) AS searchcount
                                        FROM tagthread AS tagthread
                                        I |
| 934 | user_vbuser  | localhost | vb_dbname | Query   | 0    | Copying to tmp table | SELECT tagthread.tagid, tag.tagtext, COUNT(*) AS searchcount
                                        FROM tagthread AS tagthread
                                        I |
| 935 | root             | localhost |                   | Query   | 0    |                      | show processlist                                                                                     |
+-----+------------------+-----------+-------------------+---------+------+----------------------+------------------------------------------------------------------------------------------------------+
Uptime: 592  Threads: 10  Questions: 13211  Slow queries: 0  Opens: 672  Flush tables: 1  Open tables: 345  Queries per second avg: 22.316

Can someone please explain exactly what's going on up here? I have no taggin plugin installed at all.

--------------- Added [DATE]1266380338[/DATE] at [TIME]1266380338[/TIME] ---------------

I disabled "Enable Search Tag Cloud" in vboptions > Tagging Options

Processes no longer there now.