IE crashes when searching for installed updates

Hello,
While WU is searching to see what updates I need to install, an error report
dialog comes up and I have to close IE. Here's what I've gotten from the
event log:

Faulting application iexplore.exe, version 6.0.2900.2180, faulting module
rsaenh.dll, version 5.1.2600.2161, fault address 0x0002021a.

0000: 41 70 70 6c 69 63 61 74 Applicat
0008: 69 6f 6e 20 46 61 69 6c ion Fail
0010: 75 72 65 20 20 69 65 78 ure iex
0018: 70 6c 6f 72 65 2e 65 78 plore.ex
0020: 65 20 36 2e 30 2e 32 39 e 6.0.29
0028: 30 30 2e 32 31 38 30 20 00.2180
0030: 69 6e 20 72 73 61 65 6e in rsaen
0038: 68 2e 64 6c 6c 20 35 2e h.dll 5.
0040: 31 2e 32 36 30 30 2e 32 1.2600.2
0048: 31 36 31 20 61 74 20 6f 161 at o
0050: 66 66 73 65 74 20 30 30 ffset 00
0058: 30 32 30 32 31 61 02021a

Can I repair rsaenh.dll?