Poor call

The thing that annoys me about online poker is not the luck of the cards but the quality of the play. How SB can call this is beyond me. And considering that I'd folded the majority of hands and was playing super-tight.

***** Betfair Poker Hand History for Game 215165444 *****
NL Texas Hold'em $25 Buy-in + $2.50 Entry Fee, Level:8 Blinds(200/400-25 ante) - Sunday, June 03, 15:26:48 GMT 2007
$25+$2.50 NL Holdem #834800
Table 1 9-max (Real Money)
Seat 6 is the button
Total number of active players : 4
Seat 1: DSW2005 ( 4,490 )
Seat 2: RumTiddle ( 1,876 )
Seat 6: stevo16 ( 1,565 )
Seat 7: 66blowoff66 ( 5,569 )
Tourney Level:8 Blinds(200/400-25 ante)
DSW2005 posts ante [25]
RumTiddle posts ante [25]
stevo16 posts ante [25]
66blowoff66 posts ante [25]
66blowoff66 posts small blind [200]
DSW2005 posts big blind [400]
** Dealing down cards **
Dealt to RumTiddle [ Jh, Ac ]
RumTiddle goes all-in
RumTiddle raises to [1,851]
stevo16 folds
66blowoff66 calls [1,651]
DSW2005 folds
** Showdown **
RumTiddle shows [ Jh, Ac ]
66blowoff66 shows [ Jc, Kc ]
** Dealing Flop ** [ Qc, Js, Ts ]
** Dealing Turn ** [ As ]
** Dealing River ** [ 3s ]
** Hand Conclusion **
66blowoff66 wins 4,202 from main pot with a straight, Ace to Ten
************ Game 215165444 ends ************