I know for MPS 3.0 I had problems after rollup03. The hotifxes that were supposed to fix the minimizing cause the cpu to rise significantly. I was told today that Citrix is releasing Rollup04 next week which will fix the issue. I would assume there is a fix coming for XP as well but you would have to check with Citrix before you start reversing the changes of the last service pack. Chris -----Original Message----- From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of M Sent: Monday, September 19, 2005 7:47 PM To: Thin@xxxxxxxxxxxxx Subject: [THIN] Has anyone noticed that their seamless apps behave differently after FR3/SP4 has been applied ? Hello there, One of our older farms requires an upgrade and i am currently testing Metaframe XP FR3 / SP4 on our test servers. I have been doing some comparisons and a few of our non Microsoft seamless applications have started to misbehave themselves. MetaFrame Service Pack 4 is definately the cause of the problem as i have 10 identical servers, 5 running FR3/SP3 and 5 running FR3 /SP4. Certain windows/boxes within applications now no longer minimise to the taskbar correctly with SP4 whereas SP3 with Hotfixes up to XE103W2K126 works as expected. Im now tinkering around with SPY++ to see if i can reverse the changes that SP4 has made. Anyone else come accross this issue ? PS the SP4 security rollup makes no difference.