Database error message when clicking on "New Posts"
 

Hey, I'm getting a VB database error on my forums when I click on the "New Posts" link and when I click on "Find more posts by user" in someone's profile.

Here is the error message:

Code:
Database error in vBulletin 3.6.8:
Invalid SQL:
REPLACE INTO clubxcomsearch (userid, showposts, ipaddress, personal, forumchoice, sortby, sortorder, searchtime, orderedids, announceids, dateline, displayterms, searchhash, completed)
VALUES (1, 0, '68.193.215.133', 1, '', 'lastpost', 'DESC', 0.00882, '3250,3215,2908,2312,3213,3246,2914,3244,3228,3239 ,3248,3247,3221,3241,3123,3131,3240,3242,3245,3232 ,3219,3217,614,3229,3236,3238,3184,3235,3156,3237, 3224,3220,3208,2817,3197,3210,3202,3233,2209,3223, 3179,2901,1628,3106,3218,1763,683,3086,3121,3227,3 098,3231,3159,3207,918,1224,3230,3171,3157,2811,32 26,3225,3144,3216,3222,3196,2734,2620,3173,3209,24 75,3203,2895,3006,3093,2944,2431,3204,3214,3172,32 11,3017,3212,3206,396,2991,3189,3081,3058,3169,314 2,3088,3198,3190,3183,3120,3165,3150,3205,3124,271 4,3187,3118,505,3166,3074,3195,2207,3143,3176,2758 ,3194,3191,3177,3201,3186,3199,3055,3200,3167,2967 ,3137,3062,2900,3185,3126,3192,3178,3122,3188,2505 ,3182,1408,3155,2253,2522,2012,3181,3082,3090,3168 ,3130,2952,3164,3096,1421,3174,3152,3027,3175,3115 ,3141,3107,3064,3104,2195,3170,2755,2945,3163,3108 ,1222,3147,3161,3162,3160,3149,3134,2878,2782,3063 ,2987,3148,3151,2068,3132,3020,3128,3113,3145,2885 ,3146,2660,1845,3103,3119,2865,605,2792,3109,3140, 3129,3135,3125,817,3138,2673,3110,2923,3057,1231,2 408', '', 1270532518, 'a:6:{s:5:\"words\";a:0:{}s:9:\"highlight\";a:0:{} s:6:\"common\";a:0:{}s:5:\"users\";a:0:{}s:6:\"for ums\";N;s:7:\"options\";a:3:{s:11:\"starteronly\"; b:0;s:11:\"childforums\";b:1;s:6:\"action\";s:6:\" getnew\";}}', '1757130e5355b6ad83d46c602aca3a48', 1);
MySQL Error : Duplicate entry '87348' for key 1
Error Number : 1062
Date : Tuesday, April 6th 2010 @ 01:41:58 AM
Script : http://www.mysite.com/vb/search.php?do=getnew
Referrer : http://www.mysite.com/vb/
IP Address : ********
Username : Admin
Classname : vB_Database

Any ideas why this is happening?

Thanks! :)