Microsoft have released an update to Rollup2 that fixes a few of the gripes that have come up about it.
http://support.microsoft.com/kb/908250
Issues resolved
Update Rollup 908250 resolves the following issues with Update Rollup 2 for Microsoft Windows XP Media Center Edition 2005: • Electronic Program Guide shows scrambled DVB-T channels.
In regions where the Terrestrial Digital Broadcasting Services (DVB-T) signal is offered, an issue was identified with scrambled channels in the Electronic Program Guide. This issue is fixed by this update. If you download the Electronic Program Guide before you install this update, you may have to apply this update, rescan channels, and then download a new Electronic Program Guide.
• DVB-T services are not found.
In regions where the DVB-T signal is offered, an issue was identified where TV services were not found after users selected DVB-T as the signal type. This update resolves this issue.
• Teletext subtitles disappear after you use transport controls.
In regions that support Teletext, an issue was discovered where Teletext subtitles disappear when users use transport controls such as pause, fast forward, rewind, or play. This update resolves this issue.
• A playback initialization error occurs on resume when you suspend or hibernate a computer that is playing a DVD.
On some computers, when you suspend or hibernate the computer that is playing a DVD, you receive a playback initialization error on resume. This update resolves this issue.
• Interoperability with some third-party TV software.
Additional third-party TV software is included with some computers. This update enables third-party TV software to work better with Update Rollup 2 for Microsoft Windows XP Media Center Edition 2005.
• Support for additional optical media drives.
With Update Rollup 908250 installed, Update Rollup 2 for Microsoft Windows XP Media Center Edition 2005 supports Matsu****a DVD RAM UJ-846s drives.
