[Koha] error with 1.2.1

[Ville Huhtala]

Hello,

I have some problems with searching. Why is it using /root/tmp ?

from opac-error_log 
DBD::mysql::st execute failed: Can't create/write to file '/root/tmp/#sql10ab_c5_0.MYI' (Errcode: 13) at /var/www/html/koha/intranet/modules/C4/Search.pm line 707, <KC> line 9.
DBD::mysql::st fetchrow_hashref failed: fetch() without execute() at /var/www/html/koha/intranet/modules/C4/Search.pm line 711, <KC> line 9.

Ville Huhtala