Comment 2 for bug 948955

StacktraceTop:
 icaltimezone_ensure_coverage (zone=0x7f07000004b1, end_year=2011) at /build/buildd/libical-0.44/src/libical/icaltimezone.c:485
 icaltimezone_get_utc_offset (zone=0x7f07000004b1, tt=0x7fff3c6d7590, is_daylight=0x0) at /build/buildd/libical-0.44/src/libical/icaltimezone.c:834
 icaltimezone_convert_time (tt=0x7fff3c6d7590, from_zone=0xb1be70, to_zone=0x7f07fd69c440) at /build/buildd/libical-0.44/src/libical/icaltimezone.c:789
 icaltime_as_timet_with_zone (tt=..., zone=0xb1be70) at /build/buildd/libical-0.44/src/libical/icaltime.c:409
 e_cal_recur_generate_instances_of_rule (comp=0x7f07cc0014e0, prop=0x0, start=1331126361, end=1333891161, cb=0x7f07fd6b7d20 <add_instance>, cb_data=0xb2a500, tz_cb=0x7f07fd6bb020 <e_cal_resolve_tzid_cb>, tz_cb_data=0xace2e0, default_timezone=0xb1be70) at e-cal-recur.c:714