Does updating the firmware make the Pentax *istD slower?

JPEG images, MF, centre metering, ISO 200, mode P, 1/90s, f/2.8

Times in s, continuous mode, stopwatch granularity 0.1s

JPEG ***L

Pentax *istD Firmware 1.00 Pentax *istD Firmware 1.12
SanDisk Ultra II 512MB Crucial 64MB SanDisk Ultra II 512MB Crucial 64MB
0.0 0.0 0.0 0.0
0.3 0.3 0.3 0.3
0.7 0.7 0.7 0.7
1.1 1.1 1.1 1.1
1.5 1.5 1.5 1.5
2.4 2.4 2.4 2.4
3.7 3.7 3.7 3.7
5.3 5.5 5.4 5.3
7.0 8.4 7.0 8.0
8.7 11.3 8.8 10.6
10.4 14.3 10.5 13.3
12.0 17.4 12.2 16.0

RAW

Pentax *istD Firmware 1.00 Pentax *istD Firmware 1.12
SanDisk Ultra II 512MB Crucial 64MB SanDisk Ultra II 512MB
0.0 0.0 0.0
0.4 0.3 0.3
0.8 0.7 0.7
1.2   1.1
1.6   1.5
9.5   9.4
17.6   17.4
25.5   25.3

Time to write one image into the buffer - test performed 3 times

  Pentax *istD Firmware 1.00 Pentax *istD Firmware 1.12
  SanDisk Ultra II 512MB Crucial 64MB SanDisk Ultra II 512MB Crucial 64MB
JPEG ***L 3.4, 3.4, 3.4 4.4, 4.4, 4.4   4.4, 4.5, 4.4
RAW 8.5, 8.5, 8.5 21.5, 21.6, 21.6   21.2, 21.3, 21.5

And the answer? It depends on what you're doing and what card you're using.

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